Dell OptiPlex 790 (Early 2011) Owner's Manual
Contents
1. senes 25 Removing The Chassis Intrusion Switch 25 Installing the Intrusion Switch 26 CN E 27 Removing The Spe ker 0 u 0 A Aa 27 Installing the Speaker 28 10 Heat Sink And Processor essent 29 Removing the Heat Sink and Processor sse tnn 29 Installing the Heat Sink and Procesegr eese entente 31 TT CoinsGall Batterie ep nito o er ede tado dnos 33 Removing The Coin Cell Batter 33 Installing The Coin Cell Batter 34 12 Power Switch Cable essent 35 Removing the Power Switch Cable sess eene tente 35 Installing the Power Switch Cable 13 Front Thermal Sensor 39 Removing the Front Thermal Sensor 39 Installing the Front Thermal Sensor 40 14 System Fan PE tt 4 Removing The System Fan 41 Installing the System Fan 42 15 Input Output Panel 43 Removing the Input Output Panel AE 43 Installing the Input Output Panel AEN 45 16 Power IPP 47 Removing The Power Supp 47 Installing the Power Supply sees eren tentent 49 175 ystem Board c n 51 Removing The System Board ue 51 Installing the System Board AA 52 A A go adt 53 ECL A daidai dadia daidai dii didada daidai daidai dai 53 A EAEE ASA ESA EE AREE gege 53 Boot Menu Enhancements EE 53 TIMING Key TEE 54 NVI nied 54 System Setup Uptions EE 55 19 Troubleshootng EEN 65 Diagnostic D AE 65 Beep OU E2. Troubleshooting Steps Re install all USB devices and check all cable connections OOOO Power Button 5 Problem Description No memory modules are detected Troubleshooting e ftwoor more memory modules are installed Steps remove the modules then reinstall one module and restart the computer If the computer starts normally continue to install additional memory modules one at a time until you have identified a faulty module or reinstalled all modules without error 70 e H available install working memory of the same type into your computer OOOO Power Button Problem Description Memory modules are detected but a memory configuration or compatibility error has occurred Troubleshooting Steps Ensure that no special requirements for memory module connector placement exist Ensure that the memory you are using is supported by your computer u OOOO Power Button Problem Description A possible expansion card failure has occurred Troubleshooting Determine if a conflict exists by removing an Steps expansion card not a graphics card and restarting the computer e Ifthe problem persists reinstall the card you removed then remove a different card and restart the computer e Repeat this process for each expansion card installed If the computer starts normally troubleshoot the last card removed from the computer for resource conflicts 0000 7i Power Button Di Problem Description A
3. Internal HDD 1 Password Strong Password Password Configuration Password Bypass Password Change 58 Allows you to set change or delete the password on the system s internal hard disk drive HDD Successful changes to this password take effect immediately By default the drive will not have a password set e Enter the old password e Enter the new password e Confirm new password This field enforces strong passwords Enforce strong password This option is disabled by default These fields control the minimum and maximum number of characters allowed for Admin and System passwords e Admin Password Min e Admin Password Max e System Password Min e System Password Max Allows you to bypass the System Boot Password and the internal HDD password prompts during a system restart e Disabled Always prompt for the system and internal HDD password when they are set This option is disabled by default e Reboot Bypass Bypass the password prompts on Restarts warm boots E NOTE The system will always prompt for the system and internal HDD passwords when powered on from the off state a cold boot Also the system will always prompt for passwords on any module bay HDDs that may be present Allows you to determine whether changes to the System and Hard Disk passwords are permitted when an administrator password is set Security Non Admin Setup Changes TPM Security Computrace Chassis Intrusio
4. 50 Hz to 60 Hz 4 0 A 100 VAC to 240 VAC 50 Hz to 60 Hz 2 9 A E NOTE Heat dissipation is calculated by using the power supply wattage rating 89 Power Coin cell battery Physical Mini Tower Desktop Small Form Factor Ultra Small Form Factor Environmental Temperature ran Operating Storage Wattage Maximum Voltage Heat Dissipation 3 V CR2032 lithium coin cell Height Width Depth 36 00 cm 17 50 cm 6 89 41 70 cm 16 42 14 17 inches inches inches 36 00 cm 10 20 cm 4 01 41 00 cm 16 14 14 17 inches inches inches 29 00 cm 9 26 cm 3 65 31 20 cm 12 28 11 42 inches inches inches 23 70 cm 9 33 6 50 cm 2 56 24 00 cm 9 45 inches inches inches ge Weight 8 87 kg 19 55 Ib 7 56 kg 16 67 Ib 5 70 kg 12 57 Ib 3 27 kg 7 20 Ib 10 C to 35 C 50 F to 95 F 40 C to 65 C 40 F to 149 F Relative humidity maximum Operating Storage 20 to 80 non condensing 5 to 95 non condensing Maximum vibration Operating Storage Maximum shock Operating Storage Altitude 90 0 25 GRMS 0 5 GRMS 40 G 105 G Environmental Operating Storage Airborne contaminant level 15 2 m to 3048 m 50 ft to 10 000 ft 15 2 m to 10 668 m 50 ft to 35 000 ft G1 or lower as defined by ANSI ISA S71 04 1985 91 92 Contacting Dell 21 Contacting Dell K NOTE If you do not have an active Internet connection you can find c
5. such as a lamp 65 LED Power Button Problem Description Ensure that the main power cable and front panel cable are securely connected to the system board 090 EI A possible system board failure has occurred Troubleshooting Steps Unplug the computer Allow one minute for the power LED Power Button Problem Description Troubleshooting Steps 66 to drain Plug the computer into a working electrical outlet and press the power button OOOO A possible system board power supply or peripheral failure has occurred e Power off computer leaving the computer plugged in Press and hold the power supply test button at the rear of the power supply unit If the LED next to the switch illuminates the problem may be with your system board e fthe LED next to the switch does not illuminate disconnect all internal and external peripherals and press and hold the power supply test button If it illuminates there could be a problem with a peripheral e fthe LED still does not illuminate remove the PSU connections from the system board then press and hold the power supply button If it illuminates there could be a problem with the system board e ifthe LED still does not illuminate the problem is with the power supply LED Power Button Problem Memory modules are detected but a memory power Description failure has occurred Troubleshooting z Steps LED Power Button Problem Descripti
6. BIOS Extension CTRL P F12 59 Security Admin Setup Lockout Performance Multi Core Support Intel SpeedStep C States Control Intel TurboBoost Hyper Thread Control Power Management AC Recovery 60 Enable User may enter OROM configuration screens via the hotkey e One Time Enable User may enter OROM configuration screens via the hotkeys on next boot only After next boot the setting will revert to disabled e Disable User may not enter OROM configuration screens via the hotkey This option is set to Enable by default Allows you to enable or disable the option to enter Setup when an Admin password is set This option is not set by default This field specifies whether the process will have one or all cores enabled The performance of some applications will improve with the additional cores This option is enabled by default Allows you to enable or disable the Intel SpeedStep mode of the processor This option is enabled by default Allows you to enable or disable the additional processor sleep states This option is enabled by default Allows you to enable or disable Inel TurboBoost mode of the processor e Disabled Does not allow the TurboBoost driver to increase the performance state of the processor above the standard performance e Enabled Allows the Intel Turbo driver to increase the performance of the CPU or graphics processor This option is enabled by
7. Blu ray Disc Association BDA and licensed for use on discs and players The Bluetooth word mark is a registered trademark and owned by the Bluetooth SIG Inc and any use of such mark by Dell Inc is under license Wi Fi is a registered trademark of Wireless Ethernet Compatibility Alliance Inc Other trademarks and trade names may be used in this publication to refer to either the entities claiming the marks and names or their products Dell Inc disclaims any proprietary interest in trademarks and trade names other than its own 2011 07 Rev A00 Contents Notes Cautions and Warnings eese rennen 2 1 Working on Your Computer eese rnnt 7 Before Working Inside Your Computer 7 Recommended Tod iia rb erede t e RP dee ia is 8 Turning Off Your Computer 8 After Working Inside Your Computer 9 ENEE 11 Removing the COVE T e ege deed Eed ee fee ee dek e A 11 Installing the Cover 3 Front Bazel AA nah 13 Removing the Front Bezel ENEE 13 Installing The Front Bezel entente tenth rnnt natn ono cnn sns tent 14 4 Expansion CANO ica 15 Removing the Expansion Card 15 Installing The Expansion Card 17 5 0PHcal DING a eee trt Mente OnE ea n pectet uidens 19 Removing the Optical Drive 19 Installing The Optical Drive 20 A iai Removing the Hard Drive Installing The Hard Drive Installing the Memon non tenth tnter ttn nrnrnrnnnnn 24 8 Chassis Intrusion Switch
8. Enabled with ImageServer Specifies how the client obtains the IP address e Static IP e DNS enabled by default Z NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer Specifies the static IP address of the client The default IP address is 255 255 255 255 K NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer and when Client DHCP is set to Static IP Specifies the subnet mask of the client The default setting is 255 255 255 255 63 Image Server Client Gateway License Status System Logs BIOS Events DellDiag Events Thermal Events Power Events BIOS Progress Events 64 E NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer and when Client DHCP is set to Static IP Specifies the gateway IP address for the client The default setting is 255 255 255 255 E NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer and when Client DHCP is set to Static IP Displays the current license status Allows you to clear the system event logs e Clear Log Displays the DellDiag event log Displays the thermal event log and allows you to e C
9. VMM from utilizing the additional hardware capabilities provided by Intel Virtualization technology for direct I O Enable Intel Virtualization Technology for Direct 1 0 This option is disabled by default Displays the Service Tag of your computer Allows you to create a system asset tag if an asset tag is not already set This option is not set by default Controls the SERR message mechanism This option is not set by default Some graphics cards require that the SERR message mechanism be disabled Image Server Lookup Method ImageServer IP ImageServer Port Client DHCP Client IP Client Subnet Mask Specifies how the ImageServer looks up the server address e Static IP e DNS enabled by default E NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer Specifies the primary static IP address of the ImageServer with which the client software communicates The default IP address is 255 255 255 255 K NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to Enabled with ImageServer and when Lookup Method is set to Static IP Specifies the primary IP port of the ImageServer with which the client communicates The default IP port is 06910 Z NOTE This field is only relevant when the Integrated NIC control in the System Configuration group is set to
10. boot menu includes two diagnostic options IDE Drive Diagnostics 90 90 Hard Drive Diagnostics and Boot to the Utility Partition The benefit here is that you do not have to remember the lt Ctri gt lt Alt gt lt D gt and lt Ctrl gt lt Alt gt lt F10 gt keystrokes although they still work K NOTE The BIOS features an option to disable either or both of the keystroke prompts under the System Security Post Hotkeys submenu 53 When you enter the lt F12 gt or lt Ctrl gt lt Alt gt lt F8 gt keystroke correctly the computer beeps The key sequence invokes the Boot Device Menu LEGACY BOOT Intel ARRAY CD DUD CD RV Drive OTHER OPTIONS BIOS Setup Diagnostics Intel G0 Management Engine Since the one time boot menu only affects the current boot it has the added benefit of not requiring the technician to restore the customer s boot order after completing troubleshooting Timing Key Sequences The keyboard is not the first device initialized by Setup As a result if you press a keystroke too early you lock out the keyboard When this happens a keyboard error message appears on the monitor and you cannot restart the system with the lt Ctrl gt lt Alt gt lt Del gt keys To avoid this scenario wait until the keyboard is initialized before pressing the keystroke There are two ways to know that this has happened The keyboard lights flash The F2 Setup prompt appears in the top right hand corner of the sc
11. connector Factor Ultra Small Form Factor none Serial ATA Mini Tower four 7 pin connectors Desktop Small Form Factor three 7 pin connectors Ultra Small Form Factor two 7 pin connectors Memory Mini Tower Desktop Small Form four 240 pin connectors Factor Ultra Small Form Factor two 240 pin connectors Internal USB Mini Tower Desktop one 10 pin connector Small Form Factor Ultra SmallForm none Factor System Fan one 5 pin connector 87 System Board Connectors Front panel control Mini Tower Desktop Small Form Factor Ultra Small Form Factor Desktop Small Form Factor Ultra Small Form Factor Processor Processor Fan Power connector Mini Tower Desktop Small Form Factor Ultra Small Form Factor Controls and Lights Front ofthe computer Power button light Drive activity light Diagnostic lights Back of the computer Link integrity light on integrated network adapter 88 one 34 pin connector one 20 pin connector two 2 pin connectors one 1155 pin connector one 5 pin connector one 34 pin connector none Blue light Solid blue light indicates power on state blinking blue light indicates sleep state of the computer Amber light Solid amber light when the computer does not start indicates a problem with the system board or power supply Blinking amber light indicates a problem with the system board Blue light Blinking blue light indicates that the computer is reading data
12. default Allows you to enable or disable the Hyper Threading Technology This option is enabled by default Determines how the system responds when AC power is re applied after a power loss You can set the AC Recovery to e Power Off default Power Management Auto On Time Deep Sleep Control Fan Control Override Wake on LAN POST Behavior Numlock LED Power On e Last State Allows you to set the option to automatically turn on the computer Time is kept in standard 12 hour format hour minutes seconds Change the startup time by typing the values in the time and AM PM fields E NOTE This feature does not work if you turn off your computer using the switch on a power strip or surge protector or if Auto Power is setto disabled Allows you to define the controls when Deep Sleep is enabled e Disabled e Enabled in S5 only e Enabled in S4 and S5 This option is Disabled by default Controls the speed of the system fan This option is disabled by default E NOTE When enabled the fan runs at full speed This option allows the computer to power up from the off state when triggered by a special LAN signal Wake up from the Standby state is unaffected by this setting and must be enabled in the operating system This feature only works when the computer is connected to AC power supply e Disabled Does not allow the system to power on by special LAN signals when it receives a wake up signal from the LAN
13. height card two one one slim line bay one slim line bay two one 85 Drives Small Form Factor Ultra Small Form Factor 2 5 inch SATA drive bays Mini Tower Desktop Small Form Factor Ultra Small Form Factor External Connectors Audio Back Panel Front Panel Network Adapter Serial Parallel USB 2 0 Mini Tower Desktop Small Form Factor Ultra Small Form Factor Video one none two one one one two connectors for line out and line in microphone two connectors for microphone and headphone one RJ45 connector one 9 pin connector 16550C compatible one 25 pin connector optional for mini tower Front Panel 4 Back Panel 6 Front Panel 2 Back Panel 5 15 pin VGA connector 20 pin DisplayPort connector Z2 NOTE Available video connectors may vary based on the graphics card selected 86 System Board Connectors PCI 2 3 data width maximum 32 bits Mini Tower Desktop one 120 pin connector Small Form Factor Ultra SmallForm none Factor PCI Express x1 data width maximum one PCI Express lane Mini Tower Desktop Small Form one 164 pin connector Factor Ultra Small Form Factor none PCI Express x16 wired as x4 data width maximum four PCI Express lanes Mini Tower Desktop Small Form one 164 pin connector Factor Ultra Small Form Factor none PCI Express x16 data width maximum 16 PCI Express lanes Mini Tower Desktop Small Form one 164 pin
14. or wireless LAN e LAN Only Allows the system to be powered on by special LAN signals This option is Disabled by default Allows you to enable or disable the Numlock feature when your computer starts This option is enabled by default 61 POST Behavior Keyboard Errors POST Hotkeys Fast Boot Virtualization Support Virtualization VT for Direct 1 0 Maintenance Service Tag Asset Tag SERR Messages 62 Allows you to enable or disable the keyboard error reporting when the computer starts This option is enabled by default Allows you to specify the function keys to display on the screen when the computer starts Enable F12 Boot menu enabled by default This option can speed up the boot process by bypassing some compatibility steps e Minimal The system boots quickly unless the BIOS has been updated memory changed or the previous POST did not complete e Thorough The system does not skip any steps in the boot process e Auto This allows the operating system to control this setting this works only when the operating system supports Simple Boot Flag This option is set to Thorough by default This option specifies whether a Virtual Machine Monitor VMM can utilize the additional hardware capabilities provided by Intel Virtualization Technology Enable Intel Virtualization Technology This option is enabled by default Enables or disables the Virtual Machine Monitor
15. possible system board resource and or hardware Troubleshooting Steps LED Power Button Problem Description Troubleshooting Steps Beep Codes failure has occurred e Clear CMOS e Disconnect all internal and external peripherals and restart the computer If the computer boots add the peripheral cards back one by one until you find the bad one e fthe problem persists the system board system board component is faulty 00090 Some other failure has occurred Ensure that the display monitor is plugged into a discrete graphic card Ensure that all hard drives and optical drive cables are properly connected to the system board e fthereisan error message on the screen identifying a problem with a device hard drive check the device to make sure it is functioning properly e ifthe operating system is attempting to boot from a device optical drive check system setup to ensure the boot sequence is correct for the devices installed on your computer The computer can emit a series of beeps during start up if the display cannot show errors or problems These series of beeps called beep codes identify various problems The delay between each beep is 300 ms the delay between 72 each set of beeps is 3 sec and the beep sound lasts 300 ms After each beep and each set of beeps the BIOS should detect if the user presses the power button If so BIOS will jump out from looping and execute the nor
16. the procedures in Before Working Inside Your Computer Remove the cover Remove the front bezel Remove the data cable and power cable from the back of the optical drive gt wa Doo 5 Slide down the optical drive latch and then push the optical drive from the back towards the front of the computer 6 Repeat steps 4 and 5to remove the second optical drive if available Installing The Optical Drive 1 oF Oh 20 Slide up the optical drive latch and push the optical drive from the front towards the back of the computer Connect the data cable and power cable to the optical drive Install the front bezel Install the cover Follow the procedures in After Working Inside Your Computer Hard Drive Removing the Hard Drive 1 2 3 4 5 Follow the procedures in Before Working Inside Your Computer Remove the cover Remove the data cable and power cable from the back of the hard drive V 2 EA EG Press both blue securing bracket tabs inwards and lift the hard drive bracket out ofthe bay Flex the hard drive bracket and then remove the hard drive from the bracket 21 6 Repeat the above steps for the second hard drive if available Installing The Hard Drive 1 2 22 Flex the hard drive bracket and then insert the hard drive into the bracket Press both blue securing bracket tabs inward and slide the hard drive bracket into the bay in the chassis Connect the dat
17. the screws that secure the power supply to the back of the computer Push in on the blue release tab beside the power supply and slide the power supply towards the front of the computer 9 u D H u Installing the Power Supply 1 eo gm F m m Place the power supply in the chassis and slide towards the back of the computer to secure it Tighten the screws securing the power supply to the back of the computer Connect the 4 pin power cable to the system board Connect the 24 pin power cable to the system board Thread the power cables into the chassis clips Connect the power cables connected to the hard drives s and optical drive s Install the cover Follow the procedures in After Working Inside Your Computer 49 50 System Board 17 Removing The System Board 1 o om SF fa mw 1 8 Follow the procedures in Before Working Inside Your Computer Remove the cover Remove the ront bezel Remove the expansion card Remove the heat sink and processor Disconnect all the cables connected to the system board Slide the system board towards the front of the computer 51 9 Tilt the system board to 45 degrees and then lift the system board out of the computer Installing the System Board 1 go u m 41 32 c mm 52 Align the system board to the port connectors on the back ofthe chassis and place the system board in the chassis Tighten the screws secu
18. Dell OptiPlex 790 Mini Tower Owner s Manual Regulatory Model DO9M Regulatory Type D09M001 Notes Cautions and Warnings E NOTE A NOTE indicates important information that helps you make better use of your computer N CAUTION A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed A WARNING A WARNING indicates a potential for property damage personal injury or death Information in this publication is subject to change without notice 2011 Dell Inc All rights reserved Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc is strictly forbidden Trademarks used in this text Dell the DELL logo Dell Precision Precision ON ExpressCharge Latitude Latitude ON OptiPlex Vostro and Wi Fi Catcher are trademarks of Dell Inc Intel Pentium Xeon Core Atom Centrino and Celeron are registered trademarks or trademarks of Intel Corporation in the U S and other countries AMD is a registered trademark and AMD Opteron AMD Phenom AMD Sempron AMD Athlon ATI Radeon and ATI FirePro are trademarks of Advanced Micro Devices Inc Microsoft Windows MS DOS Windows Vista the Windows Vista start button and Office Outlook are either trademarks or registered trademarks of Microsoft Corporation in the United States and or other countries Blu ray Disc is a trademark owned by the
19. Description The operating system cannot read from the floppy or hard drive the computer could not find a particular sector on the disk or the requested sector is defective Reset failed Description The disk re set operation failed Sector not found Description The operating system cannot locate a sector on the floppy or hard drive 79 Seek error Description The operating system cannot find a specific track on the floppy disk or hard drive Shutdown failure Description A chip on the system board might be malfunctioning Time of day clock stopped Description The battery might be dead Time of day not set please run the System Setup program Description The time or date stored in System Setup does not match the computer clock Timer chip counter 2 failed Description A chip on the system board may be malfunctioning Unexpected interrupt in protected mode Description The keyboard controller may be malfunctioning or amemory module may be loose WARNING Dell s Disk Monitoring System has detected that drive 0 1 on the primary secondary EIDE controller is operating outside of normal specifications It is advisable to immediately back up your data and replace your hard drive by calling your support desk or Dell Description During initial startup the drive detected possible error conditions When your computer finishes booting immediately back up your data and replace your hard drive for installation procedures see Addin
20. M slots 83 Memory Capacity Minimum Memory Maximum memory Desktop Mini Tower Small Form Factor Ultra Small Form Factor Video Integrated Discrete Video memory Audio Integrated Network Integrated Expansion Bus Bus Type Bus Speed 84 1 GB 2 GB and 4 GB 1GB 16 GB 8 GB e Intel HD Graphics e Intel HD Graphics 2000 PCI Express x16 graphics adapter up to 1 7 GB shared video memory Microsoft Windows Vista and Windows 7 four Channel High Definition Audio Intel 82579LM Ethernet capable of 10 100 1000 Mb s communication e PCI23 e PCI Express 2 0 e SATA 1 0 2 0 3 0 e USB2 0 PCI Express e x1 slot bidirectional speed 500 MB s e x16 slot bidirectional speed 16 GB s SATA 1 5 Gbps 3 0 Gbps and 6 0 Gbps Cards PCI Mini Tower Desktop Small Form Factor Ultra Small Form Factor up to one full height card up to one low profile card none none PCI Express x16 with support for PCI Express x1 Mini Tower Desktop Small Form Factor Ultra Small Form Factor Mini PCI Express Mini Tower Desktop Small Form Factor Ultra Small Form Factor Drives Externally Accessible 5 25 inch drive bays Mini Tower Desktop Small Form Factor Ultra Small Form Factor Internally Accessible 3 5 inch SATA drive bays Mini Tower Desktop up to one full height cards up to one low profile cards up to one low profile cards none none none none up to one half
21. OOOO Power Button Problem Description A possible system board failure has occurred Troubleshooting e Disconnect all internal and external peripherals Steps and re start the computer If the computer boots add the peripheral cards back one by one until you find the bad one 68 e fthe problem persists the system board is faulty 00090 Power Button a Problem Description A possible coin cell battery failure has occurred Troubleshooting Steps Remove the coin cell battery for one minute reinstall the battery and restart 0090 Power Button E Problem Description A possible processor failure has occurred Troubleshooting Steps Re seat the processor 00909 Power Button Problem Description Memory modules are detected but a memory failure has occurred Troubleshooting e ftwoor more memory modules are installed Steps remove the modules then re install one module and re start the computer If the computer starts normally continue to install additional memory modules one at a time until you have identified a faulty module or reinstalled all modules without error 69 e H available install working memory of the same type into your computer j 900900 Power Button 5 Problem Description A possible hard drive failure has occurred Troubleshooting Steps Re seat all power and data cables LED 0009 Power Button fo Problem Description A possible USB failure has occurred
22. a cable and power cable to the back of the hard drive Install the cover Follow the procedures in After Working Inside Your Computer Memory 1 Removing the Memory Follow the procedures in Before Working Inside Your Computer 2 Removethe cover 3 Release the memory retention clips on each side of the memory modules 23 Installing the Memory 1 Insertthe memory modules into the connectors on the system board Install the memory module in the order of A1 gt B1 A2 gt B2 2 Press down on the memory modules until the retention clips spring back to secure them in place 3 Install the cover 4 Follow the procedures in After Working Inside Your Computer 24 Chassis Intrusion Switch 8 Removing The Chassis Intrusion Switch 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the intrusion switch cable from system board 4 Slide the intrusion switch toward the chassis bottom and remove it from the system board 25 Installing the Intrusion Switch 1 26 Insert the intrusion switch into the chassis rear and slide it toward the chassis top to secure it Connect the intrusion switch cable to the system board Install the cover Follow the procedures in After Working Inside Your Computer Speaker Removing The Speaker 1 2 3 4 5 Follow the procedures in Before Working Inside Your Computer Remove the cover Disconnect the speaker
23. aneous Devices Video Multi Display e Disabled The SATA controller is hidden Allows you to enable or disable the various on board drives e SATA 0 e SATA 1 e SATA 2 e SATA 3 This field controls whether hard drive errors for integrated drives are reported during system startup This technology is part of the SMART Self Monitoring Analysis and Reporting Technology specification This option is disabled by default This field configures the integrated USB controller If Boot Support is enabled the system is allowed to boot any type of USB Mass Storage Devices HDD memory key floppy USB aware OS always see USB Mass Storage devices irrespective of this setting provided the port is enabled If USB port is enabled device attached to this port is enabled and available for OS If USB port is disabled the OS cannot see any device attached to this port Enable USB Controller e Disable USB Mass Storage Dev e Disable USB Controller Z NOTE USB keyboard and mouse always work in the BIOS setup irrespective of these settings Allows you to enable or disable various on board devices Enable PCI Slot This option is enabled by default Allows you to enable or disable Multi Display It should be enabled for Windows 7 32 64 bit only Enable Multi Display This option is disabled by default 57 Video E NOTE The Video setting will only be visible when a video card is installed in the system Security
24. cable from the system board Press down the speaker securing tab and slide the speaker upwards to remove it 27 Installing the Speaker 1 Pressthe speaker securing tab and slide the speaker downward to secure it Thread the speaker cable into the chassis clip Connect the speaker cable to the system board Install the cover Follow the procedures in After Working Inside Your Computer E P WD 28 Heat Sink And Processor 10 Removing the Heat Sink and Processor 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the heat sink assembly cable from the system board 4 Loosenthe captive screws that secure the heat sink assembly to the system board 5 Liftthe heat sink assembly upwards and remove it from the computer Lay the assembly with the fan facing downwards and with the thermal grease facing upwards 29 6 Pressthe release lever down and then move it outwards to release it from the retention hook that secures it 7 Liftthe processor cover 8 Liftthe processor to remove itfrom the socket and place itin an antistatic package 30 Installing the Heat Sink and Processor 1 Insert the processor into the processor socket Ensure the processor is properly seated Lower the processor cover Press the release lever down and then move it inward to secure it with the retention hook Place the heat sink assembly into the cha
25. ck Speed Maximum Clock Speed Processor L2 Cache Processor L3 Cache HT Capable and 64 Bit Technology PCI Information Displays SLOT1 SLOT2 SLOT3 SLOT4 Device Information Displays SATA 0 SATA 1 SATA 2 SATA 3 and LOM MAC Address Boot Sequence Allows you to specify the order in which the computer attempts to find an operating system The options are Diskette drive USB Storage Device CD DVD CD RW Drive Onboard NIC 55 General Boot List Option Date Time System Configuration Integrated NIC Serial Port SATA Operation 56 SATA CD DVD CD RW Drive Legacy UEFI Allows you to set the date and time Changes to the system date and time take effect immediately Allows you to enable or disable the integrated network card You can set the integrated NIC to E Disabled Enabled default Enabled w PXE Enabled w ImageServer NOTE Depending on the computer and its installed devices the items listed in this section may or may not appear Allows you to define the serial port settings You can set the serial port to Eu Disabled Auto COM1 COM2 COM3 COMA NOTE The operating system may allocate resources even though the setting is disabled Allows you to configure the operating mode of the integrated hard drive controller AHCI SATA is configured for AHCI mode ATA SATA is configured for ATA mode System Configuration Drives Smart Reporting USB Configuration Miscell
26. e DD gt Follow the procedures in After Working Inside Your Computer Slide the power switch cable in through the front of the computer 37 38 Front Thermal Sensor Removing the Front Thermal Sensor 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the thermal sensor cable from the system board 4 Unthread the thermal sensor cable from the chassis clip 5 Pry the thermal sensor away from the chassis front and remove 13 39 Installing the Front Thermal Sensor Secure the thermal sensor to the chassis front Thread the thermal sensor cable into the chassis clips Connect the thermal sensor cable to the system board Install the cover Follow the procedures in After Working Inside Your Computer ap Fe m m 40 System Fan 14 Removing The System Fan 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the system fan cable from the system board 4 Pry and remove the system fan away from the four grommets securing it to the back of the computer 41 Installing the System Fan 1 Place the system fan in the chassis 2 Passthe four grommets through the chassis and slide outward along the grooves to secure them in place 3 Connectthe fan cable to the system board 4 Installthe cover 5 Follow the procedures in After Working Inside Your Computer 42 Input Output Panel 15 Removing
27. e cover A CAUTION Before touching anything inside your computer ground yourself by touching an unpainted metal surface such as the metal at the back of the computer While you work periodically touch an unpainted metal surface to dissipate static electricity which could harm internal components Recommended Tools The procedures in this document may require the following tools Small flat blade screwdriver Phillips screwdriver Small plastic scribe Flash BIOS update program media Turning Off Your Computer A CAUTION To avoid losing data save and close all open files and exit all open 1 programs before you turn off your computer Shut down the operating system In Windows 7 Click stan then click Shut Down n Windows Vista Click stan then click the arrow in the lower right corner of the Start menu as shown below and then click Shut Down m aa oO n Windows XP Click Start Turn Off Computer Turn Off The computer turns off after the operating system shutdown process is complete 2 Ensure that the computer and all attached devices are turned off If your computer and attached devices did not automatically turn off when you shut down your operating system press and hold the power button for about 6 seconds to turn them off After Working Inside Your Computer After you complete any replacement procedure ensure you connect any external devices cards and cables before turning on you
28. e cover Follow the procedures in After Working Inside Your Computer Expansion Card A Removing the Expansion Card 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Pushthe release tab on the card retention latch outward po mb 4 Pull the release lever away from the PCle x16 card to release the securing tab from the dent in the card Then ease the card up and out of its connector and remove itfrom the computer 5 Liftthe PCle x1 expansion card if any up and out of its connector and remove it from the computer 6 Liftthe PCI expansion card if any up and out of its connector and remove it from the computer 7 Liftthe PCI x4 expansion card if any up and out of its connector and remove it from the computer Installing The Expansion Card 1 Insert the PCle x4 card into the connector on the system board and press down to secure it in place Insert the PCle card if any into the connector on the system board and press down to secure it in place Insert the PCle x1 card if any into the connector on the system board and press down to secure it in place Insert the PCle x16 card if any into the connector on the system board and press down to secure it in place Press the retention tab on the card retention latch downwards Install the cover Follow the procedures in After Working Inside Your Computer Optical Drive 5 Removing the Optical Drive Follow
29. e o TRAE Error Messages E A mei R a 83 Technical Spnecifteatons EE 83 21 Contacting Dallas sine 93 Contacting TEE 93 Working on Your Computer 1 Before Working Inside Your Computer Use the following safety guidelines to help protect your computer from potential damage and to help to ensure your personal safety Unless otherwise noted each procedure included in this document assumes that the following conditions exist e You have read the safety information that shipped with your computer Acomponent can be replaced or if purchased separately installed by performing the removal procedure in reverse order DM WARNING Before working inside your computer read the safety information that shipped with your computer For additional safety best practices information see the Regulatory Compliance Homepage at www dell com regulatory_compliance A CAUTION Many repairs may only be done by a certified service technician You should only perform troubleshooting and simple repairs as authorized in your product documentation or as directed by the online or telephone service and support team Damage due to servicing that is not authorized by Dell is not covered by your warranty Read and follow the safety instructions that came with the product A CAUTION To avoid electrostatic discharge ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface such as a connector on the back of the co
30. from or writing data to the hard drive Four lights located on the front panel of the computer Green a good 10 Mbps connection exists between the network and the computer Controls and Lights Network activity light on integrated network adapter Power supply diagnostic light Orange a good 100 Mbps connection exists between the network and the computer Yellow a good 1000 Mbps connection exists between the network and the computer Off no light the computer is not detecting a physical connection to the network Yellow light A blinking yellow light indicates that network activity is present Green light The power supply is turned on and is functional The power cable must be connected to the power connector atthe back ofthe computer and the electrical outlet E NOTE You can test the health of the power system by pressing the test button When the system power supply voltage is within specification the self test LED lights up If the LED does not light up the power supply may be defective AC power must be connected during this test Power Wattage Mini Tower 265 W Desktop 250 W Small Form 240 W Factor Ultra Small 200 W Form Factor Maximum Heat Dissipation 1390 BTU hr 1312 BTU hr 1259 BTU hr 758 BTU hr Voltage 100 VAC to 240 VAC 50 Hz to 60 Hz 5 0 A 100 VAC to 240 VAC 50 Hz to 60 Hz 4 4 A 100 VAC to 240 VAC 50 Hz to 60 Hz 3 6 A 100 VAC to 240 VAC
31. g and Removing Parts for your computer type If no replacement drive is immediately available and the drive is not the only bootable drive enter System Setup and change the appropriate drive setting to None Then remove the drive from the computer Write fault Description The operating system cannot write to the floppy or hard drive 80 Write fault on selected drive Description The operating system cannot write to the floppy or hard drive X is not accessible The device is not ready Description The floppy drive cannot read the disk Insert a floppy disk into the drive and try again 82 Specifications Technical Specifications 20 K NOTE Offerings may vary by region For more information regarding the configuration of your computer click Start or Start in Windows XP Help and Support and then select the option to view information about your computer Processor Processor type Total Cache System Information System Chipset BIOS Chip NVRAM Memory Type Speed Connectors Desktop Mini Tower Small Form Factor Ultra Small Form Factor e Intel Core i3 series e Intel Core i5 series e Intel i7 Quad Core series e Intel Pentium Dual Core series e Intel Celeron Dual Core series up to 8 MB cache depending on processor type Intel 6 Series Express chipset 64 Mbits 8 MB located at SPI_2 on chipset 16 Mbits 2 Mb located at SPI_1 on chipset DDR3 1333 MHz four DIMM slots two DIM
32. lear Log Allows you to clear the power event logs e Clear Log Displays the BIOS Progress event log Troubleshooting 19 Diagnostic LEDs K NOTE The diagnostic LEDs only serve as an indicator of the progress through the Power on Self Test POST process These LEDs do not indicate the problem that caused the POST routine to stop The diagnostic LEDs are located on the front of the chassis next to the power button These diagnostic LEDs are only active and visible during the POST process Once the operating system starts to load they turn off and are no longer visible The system now includes pre POST and POST LEDs in an attempt to help identifying a possible problem with the system easier and more accurate K NOTE The diagnostic lights will blink when the power button is amber or off and will not blink when it is blue This has no other significance Diagnostic Light Patterns 0000 Power Button EI Problem The computer is either turned off or is not receiving Description power Troubleshooting e Re seat the power cable in the power connector at Steps the back ofthe computer and the electrical outlet e Bypass power strips power extension cables and other power protection devices to verify that the computer turns on properly Ensure that any power strips being used are plugged into an electrical outlet and are turned on Ensure thatthe electrical outlet is working by testing it with another device
33. lock stopped 44 1 Serial or parallel port test failure 4 4 2 Failure to decompress code to shadowed memory 4 4 3 Math coprocessor test failure 4 4 4 Cache test failure Error Messages Address mark not found Description The BIOS found a faulty disk sector or could not find a particular disk sector Alert Previous attempts at booting this system have failed at checkpoint nnnn For help in resolving this problem please note this checkpoint and contact Dell Technical Support Description The computer failed to complete the boot routine three consecutive times for the same error Contact Dell and report the checkpoint code nnnn to the support technician 75 Alert Security override Jumper is installed Description The MFG_MODE jumper has been set and AMT Management features are disabled until it is removed Attachment failed to respond Description The floppy or hard drive controller cannot send data to the associated drive Bad command or file name Description Ensure that you have spelled the command correctly put spaces in the proper place and used the correct pathname Bad error correction code ECC on disk read Description The floppy or hard drive controller detected an uncorrectable read error Controller has failed Description The hard drive or the associated controller is defective Data error Description The floppy or hard drive cannot read the data For the Windows operating system run
34. mal shutdown process and power system Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause 1 1 2 Microprocessor register failure 1 1 3 NVRAM 1 1 4 ROM BIOS checksum failure 1 2 1 Programmable interval timer 1 2 2 DMA initialization failure 1 2 3 DMA page register read write failure 1 3 1 through 2 4 4 DIMMs not being properly identified or used 3 1 1 Slave DMA register failure 3 1 2 Master DMA register failure 3 1 3 Master interrupt mask register failure 3 1 4 Slave interrupt mask register failure 13 Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause 74 3 2 2 Interrupt vector loading failure 3 2 4 Keyboard Controller Test failure 3 3 1 NVRAM power loss 3 3 2 NVRAM configuration 3 3 4 Video Memory Test failure 3 4 1 Screen initialization failure 3 4 2 Screen retrace failure 3 4 3 Search for video ROM failure 4 2 1 No time tick 422 2 Shutdown failure 4 2 3 Gate A20 failure 42 4 Unexpected interrupt in protected mode Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause Code Cause 4 3 1 Memory failure above address OFFFFh 4 3 3 Timer chip counter 2 failure 4 3 4 Time of day c
35. mation please run SETUP program Description The computer configuration information does not match the hardware configuration Invalid Memory configuration please populate DIMM1 Description DIMM slot does not recognize a memory module The module should be re seated or installed Keyboard failure Description A cable or connector may be loose or the keyboard or keyboard mouse controller may be faulty 71 Memory address line failure at address read value expecting value Description A memory module may be faulty or improperly seated Reinstall the memory modules and if necessary replace them Memory allocation error Description The software you are attempting to run is conflicting with the operating system another program or a utility Memory data line failure at address read value expecting value Description A memory module may be faulty or improperly seated Reinstall the memory modules and if necessary replace them Memory double word logic failure at address read value expecting value Description A memory module may be faulty or improperly seated Reinstall the memory modules and if necessary replace them Memory odd even logic failure at address read value expecting value Description A memory module may be faulty or improperly seated Reinstall the memory modules and if necessary replace them Memory write read failure at address read value expecting value Description A memory module may be fault
36. mputer CAUTION Handle components and cards with care Do not touch the components or contacts on a card Hold a card by its edges or by its metal mounting bracket Hold a component such as a processor by its edges not by its pins gt A CAUTION When you disconnect a cable pull on its connector or on its pull tab not on the cable itself Some cables have connectors with locking tabs if you are disconnecting this type of cable press in on the locking tabs before you disconnect the cable As you pull connectors apart keep them evenly aligned to avoid bending any connector pins Also before you connect a cable ensure that both connectors are correctly oriented and aligned K NOTE The color of your computer and certain components may appear differently than shown in this document To avoid damaging your computer perform the following steps before you begin working inside the computer 1 2 Ensure that your work surface is flat and clean to prevent the computer cover from being scratched Turn off your computer see Turning Off Your Computer Kei CAUTION To disconnect a network cable first unplug the cable from your 6 computer and then unplug the cable from the network device Disconnect all network cables from the computer Disconnect your computer and all attached devices from their electrical outlets Press and hold the power button while the computer is unplugged to ground the system board Remove th
37. n CPU XD Support OROM Keyboard Access Allow Non Admin Password Changes This option is enabled by default This option lets you determine whether changes to the setup option are permitted when an administrator password is set Allow Wireless Switch Changes This option is disabled by default This option lets you control whether the Trusted Platform Module TPM in the system is enabled and visible to the operating system TPM Security This option is disabled by default Z2 NOTE Activation deactivation and clear options are not affected if you load the setup program s default values Changes to this option take effect immediately This field lets you Activate or Disable the BIOS module interface ofthe optional Computrace Service from Absolute Software e Deactivate This option is disabled by default e Disable e Activate Allows you to enable or disable the chassis intrusion feature You can set this option to e Clear Intrusion Warning Enabled by default if chassis intrusion is detected e Disable e Enable e On Silent Enabled by default if chassis intrusion is detected Allows you to enable or disable he execute disable mode of the processor This option is enabled by default Allows you to determine whether you access the Option ROM Configuration screens via hotkeys during boot Specifically these settings are capable of preventing access to Intel RAID CTRL I or Intel Management Engine
38. on Troubleshooting Steps LED Power Button Problem Description Troubleshooting Steps If two or more memory modules are installed remove the modules then re install one module and re start the computer If the computer starts normally continue to install additional memory modules one at a time until you have identified a faulty module or reinstalled all modules without error If only one memory module is installed try moving it to a different DIMM connector and re start the computer If available install verified working memory of the same type into your computer BIOS may be corrupt or missing The computer hardware is operating normally but the BIOS may be corrupt or missing OOOO CJ M A possible system board failure has occurred Remove all peripheral cards from the PCI and PCI E slots and re start the computer If the computer boots 67 add the peripheral cards back one by one until you find the bad one OOOO Power Button a Ed Problem Description Power connector not installed properly Troubleshooting Steps Re seat the 2x2 power connector from the power supply unit 9090 Power Button Problem Description Possible peripheral card or system board failure has occurred Troubleshooting Remove all peripheral cards from the PCI and PCI E Steps slots and re start the computer If the computer boots add the peripheral cards back one by one until you find the bad one
39. ontact information on your purchase invoice packing slip bill or Dell product catalog Dell provides several online and telephone based support and service options Availability varies by country and product and some services may not be available in your area To contact Dell for sales technical support or customer service issues Visit support dell com 2 Select your support category 3 Ifyou are not a U S customer select your country code at the bottom of the page or select All to see more choices 4 Selectthe appropriate service or support link based on your need 93
40. r computer 1 Replace the cover A CAUTION To connect a network cable first plug the cable into the network device and then plug it into the computer Connect any telephone or network cables to your computer 2 3 Connect your computer and all attached devices to their electrical outlets 4 Turnon your computer 5 Verify that the computer works correctly by running the Dell Diagnostics Cover Removing the Cover 1 2 3 Follow the procedures in Before Working Inside Your Computer Pull up the cover release latch atthe side ofthe computer Liftthe cover upward to a 45 degree angle and remove it from the computer Installing the Cover 1 2 3 Place the cover on the computer Press down on the cover till it clicks into place Follow the procedures in After Working Inside Your Computer Front Bezel 3 Removing the Front Bezel 1 2 3 4 Follow the procedures in Before Working Inside Your Computer Remove the cover Pry the front bezel retention clips away from the chassis located atthe side edge of front bezel Rotate the bezel away from the computer to release the hooks on the opposite edge ofthe bezel from the chassis Installing The Front Bezel 1 Insertthe hooks along the bottom edge of the front bezel into the slots on the chassis front Rotate the bezel toward the computer to engage the four front bezel retention clips until they click into place Install th
41. reen during boot The second method is good if the monitor is already warmed up If it is not the system often passes the window of opportunity before the video signal is visible If this is the case rely on the first method the keyboard lights to know the keyboard is initialized Navigation The computer setup can be navigated by either the keyboard or the mouse Use the following keystrokes to navigate the BIOS screens 54 Action Expand and collapse field Expand or collapse all fields Exit BIOS Change a setting Select field to change Cancel modification Reset defaults System Setup Options Keystroke Enter left or right arrow key or lt gt lt Esc gt Remain in Setup Save Exit Discard Exit Left or right arrow key lt Enter gt lt Esc gt lt Alt gt lt F gt or Load Defaults menu option K NOTE Depending on the computer and its installed devices the items listed in this section may or may not General appear System Information Displays the following information System Information Displays BIOS Version Service Tag Asset Tag Ownership Date Manufacture Date and the Express Service Code Memory Information Displays Memory Installed Memory Available Memory Speed Memory Channels Mode Memory Technology DIMM 1 Size DIMM 2 Size DIMM 3 Size and DIMM 4 Size Processor Information Displays Processor Type Core Count Processor ID Current Clock Speed Minimum Clo
42. ring the system board to the chassis Connect the cables to the system board Install the heatsink and processor Install the expansion card Install the front bezel Install the cover Follow the procedures in After Working Inside Your Computer System Setup 18 System Setup This computer offers you the following options e Access System Setup by pressing F2 e Bring up a one time boot menu by pressing lt F12 gt Press lt F2 gt to enter System Setup and make changes to the user definable settings If you have trouble entering System Setup using this key press lt F2 gt when the keyboard LEDs first flash Boot Menu This feature gives users a quick and convenient mechanism to bypass the System Setup defined boot device order and boot directly to a specific device for example floppy CD ROM or hard drive Keystroke Function lt Ctrl gt lt Alt gt lt F8 gt one time boot and diagnostics utility menu lt F12 gt one time boot and diagnostics utility menu Boot Menu Enhancements The boot menu enhancements are as follows e Easier access Although the lt Ctrl gt lt Alt gt lt F8 gt keystroke still exists and can be used to call up the menu simply press lt F12 gt during system boot to access the menu User prompting Not only is the menu easy to access when you are prompted to use the keystroke on the BIOS splash screen see image below The keystroke is not hidden Diagnostics options The
43. ssis Tighten the captive screws to secure the heat sink assembly to the system board Connect the heat sink assembly cable to the system board Install the cover Follow the procedures in After Working Inside Your Computer 31 32 Coin Cell Battery 11 Removing The Coin Cell Battery 4 Follow the procedures in Before Working Inside Your Computer Remove the cover Press the release latch away from the coin cell battery to allow the battery to pop up from the socket 33 Installing The Coin Cell Battery Place the coin cell battery into its slot on the system board Press the coin cell battery downwards until it is secured Install the cover Po o gt Follow the procedures in After Working Inside Your Computer 34 Power Switch Cable 12 Removing the Power Switch Cable 1 Follow the procedures in Before Working Inside Your Computer Remove the cover Remove the ront bezel Remove the optical drive g P ww N Disconnect the power switch cable from the system board 6 Unthread the power switch cable from the chassis clips 7 Unthread the power switch cable from the chassis clip 35 8 9 36 Installing the Power Switch Cable Secure the power switch cable to the chassis Thread the power switch cable into the chassis clips Connect the power switch cable to the system board Install the optica drive Install the front bezel Install the cover o c me nm
44. the Input Output Panel 1 Follow the procedures in Before Working Inside Your Computer Remove the cover Remove the front bezel oo N Disconnect the Input Output Panel and FlyWire cable from the system board 5 Unthread the Input Output Panel and FlyWire cable from the clip on the computer 6 Remove the screw that secures the Input Output panel to the computer 43 7 Slide the Input Output panel towards the left of the computer to release it 8 Remove the Input Output panel by routing the cable through the front of the computer 44 Installing the Input Output Panel 1 Insertthe Input Output panel into the slot on the chassis front Slide the Input Output panel towards the right of the computer to secure to the chassis Tighten the single screw to secure the Input Output panel to the chassis Thread the Input Output panel or the FlyWire cable into the chassis clip Connect the Input Output panel or the FlyWire cable to the system board N Install the front bezel Install the cover Follow the procedures in After Working Inside Your Computer po TO tr bai 45 46 Power Supply 16 Removing The Power Supply 1 Follow the procedures in Before Working Inside Your Computer 2 Remove the cover 3 Disconnect the power cables connected to the hard drive s and optical drive s 5 Disconnect the 24 pin power cable from the system board 47 6 1 8 48 Remove
45. the chkdsk utility to check the file structure of the floppy or hard drive For any other operating system run the appropriate corresponding utility Decreasing available memory Description One or more memory modules may be faulty or improperly seated Re install the memory modules and if necessary replace them Diskette drive 0 seek failure Description A cable may be loose or the computer configuration information may not match the hardware configuration Diskette read failure Description The floppy disk may be defective or a cable may be loose If the drive access light turns on try a different disk 76 Diskette subsystem reset failed Description The floppy drive controller may be faulty Gate A20 failure Description One or more memory modules may be faulty or improperly seated Reinstall the memory modules and if necessary replace them General failure Description The operating system is unable to carry outthe command This message is usually followed by specific information for example Printer out of paper Take the appropriate action to resolve the problem Hard disk drive configuration error Description The hard drive failed initialization Hard disk drive controller failure Description The hard drive failed initialization Hard disk drive failure Description The hard drive failed initialization Hard disk drive read failure Description The hard drive failed initialization Invalid configuration infor
46. y or improperly seated Reinstall the memory modules and if necessary replace them Memory size in CMOS invalid Description The amount of memory recorded in the computer configuration information does not match the memory installed in the computer Memory tests terminated by keystroke Description A keystroke interrupted the memory test No boot device available Description The computer cannot find the floppy disk or hard drive No boot sector on hard disk drive Description The computer configuration information in System Setup may be incorrect 18 No timer tick interrupt Description A chip on the system board might be malfunctioning Non system disk or disk error Description The floppy disk in drive A does not have a bootable operating system installed on it Either replace the floppy disk with one that has a bootable operating system or remove the floppy disk from drive A and restartthe computer Not a boot diskette Description The operating system is trying to boot to a floppy disk that does not have a bootable operating system installed on it Insert a bootable floppy disk Plug and play configuration error Description The computer encountered a problem while trying to configure one or more cards Read fault Description The operating system cannot read from the floppy or hard drive the computer could not find a particular sector on the disk or the requested sector is defective Requested sector not found
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