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off
off
off
off

The computer is in a normal off condition or a possible pre-BIOS failure has occurred.

Verify that the computer is plugged into a working electrical outlet and that you have pressed the power button.

green
yellow
yellow
yellow

A possible BIOS failure has occurred; the computer is in the recovery mode.

Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.

yellow
green
yellow
yellow

A possible microprocessor failure has occurred.

Reinstall the microprocessor and restart the computer.

green
green
yellow
yellow

Memory modules are detected, but a memory failure has occurred.

• If you have one memory module installed, reinstall it and restart the computer.
• If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty module or reinstalled all modules without error.
• If available, install properly working memory of the same type into your computer.
• If the problem persists, contact Dell.

yellow
yellow
green
yellow

A possible expansion card failure has occurred.

1. Determine if a conflict exists by removing a card (not the video card) and then restarting the computer.
2. If the problem persists, reinstall the card that you removed, remove a different card, and then restart the computer.
3. Repeat this process for each card. If the computer starts normally, troubleshoot the last card removed from the computer for resource conflicts (see "Resolving Software and Hardware Incompatibilities").
4. Move each card one at a time to a different PCI slot and restart the computer after each move.
5. If the problem persists, contact Dell.

green
yellow
green
yellow

A possible video card failure has occurred.

• If the computer has a video card, remove the card, reinstall it, and then restart the computer.
• If the problem still exists, install a video card that you know works and restart the computer.
• If the problem persists or the computer has integrated video, contact Dell.

yellow
green
green
yellow

A possible floppy or hard drive failure has occurred.

Reseat all power and data cables and restart the computer.

green
green
green
yellow

A possible USB failure has occurred.

Reinstall all USB devices, check cable connections, and then restart the computer.

yellow
yellow
yellow
green

No memory modules are detected.

• Reinstall all memory modules and restart the computer.
• To eliminate the possibility of a faulty memory connector, remove all memory modules, reinstall one memory module (if the computer supports a single module), and then restart the computer. If the computer starts normally, move the memory module to a different connector and restart the computer. Continue until you have identified a faulty connector or reinstalled all modules without error.

yellow
green
yellow
green

Memory modules are detected, but a memory configuration or compatibility error exists.

• Ensure that no special memory module/memory connector placement requirements exist.
• Verify that the memory modules that you are installing are compatible with your computer.
• If the problem persists, contact Dell.

yellow
green
green
green

Other failure has occurred.

• Ensure that the cables are properly connected to the system board from the hard drive, CD drive, and DVD drive.
• Check the computer message that appears on your monitor screen.
• If the problem persists, contact Dell.

green
green
green
green

The computer is in a normal operating condition after POST.

None.

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

Video Memory Test failure

1-3-1 through 2-4-4

Memory 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

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

4-2-2

Shutdown failure

4-2-3

Gate A20 failure

4-2-4

Unexpected interrupt in protected mode

4-3-1

Memory failure above address 0FFFFh

4-3-3

Timer-chip counter 2 failure

4-3-4

Time-of-day clock stopped

4-4-1

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

Solid green

Power is on, and the computer is operating normally.

Normal operating condition.

If your computer is experiencing a problem, check the back-panel diagnostics lights for more specific information (see Diagnostic Lights").

Blinking green

The computer is in the suspended state (Microsoft� Windows� 2000 and Windows XP).

Press the power button, move the mouse, or press a key on the keyboard to wake the computer.

Solid yellow

A device on the system board may be faulty or incorrectly installed.

See "Power Problems."

If the problem persists, contact Dell for technical assistance.

Blinking yellow

A power supply or system board failure may have occurred.

See "Power Problems."

If the problem persists, contact Dell for technical assistance.

Solid green and a beep code during POST

A problem was detected while the BIOS was executing.

See "Beep Codes" for instructions on diagnosing the beep code. Also, check the diagnostic lights to see if the specific problem is identified.

Solid green power light and no beep code and no video during POST

The monitor or the graphics card may be faulty or incorrectly installed.

Check the diagnostic lights to see if the specific problem is identified. See "Video and Monitor Problems."

Solid green power light and no beep code but the computer locks up during POST

An integrated system board device may be faulty.

Check the diagnostic lights to see if the specific problem is identified. If the problem is not identified, contact Dell for technical assistance.

Replace the battery � If you have to repeatedly reset time and date information after turning on the computer, or if an incorrect time or date displays during start-up, replace the battery (see "Replacing the Battery"). If the battery still does not work properly, contact Dell.

Check the card seating and cable �

1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then open the computer cover.
2. Ensure that each card is firmly seated in its connector. Reseat any loose cards.
3. Ensure that all cables are firmly connected to their corresponding connectors on the cards. If any cables appear loose, reconnect them.

For instructions on which cables should be attached to specific connectors on a card, see the cards documentation.

4. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.

Test the video card �

1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then open the computer cover.
2. Remove all cards except the video card.

If your primary hard drive is connected to a drive controller card and not to one of the system board IDE connectors, leave the drive controller card installed in the computer.

3. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
4. Run the Dell Diagnostics.

If any of the tests fail, contact Dell.

Test the cards �

1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then open the computer cover.
2. Reinstall one of the cards that you removed previously.
3. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
4. Run the Dell Diagnostics.

If any of the diagnostics tests fail, the card you just reinstalled is faulty and needs to be replaced.

5. Repeat this process until you have reinstalled all cards.

If you have reinstalled all of the cards and the problem is not resolved, contact Dell.

Test the drive �

• Insert another disk to eliminate the possibility that the original floppy disk is defective.
• Insert a bootable floppy disk and reboot the computer.

Ensure that the disk is not full or write-protected � Ensure that the disk has available space and that it is not write-protected (locked). See the following figure.

Test the floppy drive light �

MS-DOS�

Insert a floppy disk, type dir a: at the DOS prompt, and then press .

Microsoft Windows operating systems

Insert a floppy disk, click the Start button, click My Computer, and then double-click the floppy drive icon.

Clean the drive � Use a commercially available cleaning kit.

Remove and reinstall the floppy drive � See the "Drives" section pertinent to your computer chassis.

Adjust the Windows volume control � Click the speaker icon in the lower-right corner of your screen.

• Ensure that the volume is turned up by clicking the slidebar and dragging it up.
• Ensure that the sound is not muted by clicking any boxes that are checked.

Test the drive with another CD � Insert another CD to eliminate the possibility that the original CD is defective.

Ensure that Windows recognizes the drive � Click the Start button and click My Computer. If the CD drive is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from recognizing the drive.

Clean the disc � Use a commercially available cleaning kit.

Close other programs � The CD-RW drive must receive a steady stream of data when writing. If the stream is interrupted, an error occurs. Try closing all programs before writing to the CD-RW.

Test the drive with another DVD � Insert another DVD to eliminate the possibility that the original DVD is defective.

Ensure that Windows recognizes the drive � Click the Start button and click My Computer. If the DVD drive is not listed, perform a full scan with your antivirus software to check for and remove viruses. Viruses can sometimes prevent Windows from recognizing the drive.

Clean the disc � Use a commercially available cleaning kit.

Check for interrupt request conflicts � See "Resolving Software and Hardware Incompatibilities."

Check the cable connections �

1. Ensure that the DC power cables from the power supply are firmly connected to the connectors on each drive.
2. Verify that the interface cable for each drive is firmly connected to the drive and to the system board.
3. Ensure that the control panel cable is firmly connected to the system board.

If the primary hard drive that contains the operating system does not boot, files in the operating system might be corrupt. For more information, see your operating system documentation.

Run the Hard-Drive Diagnostics Utility � The Dell IDE Hard-Drive Diagnostics is a utility that tests the hard drive to troubleshoot or confirm a hard-drive failure.

1. Turn on your computer (if your computer is already on, restart it).
2. When F2 = Setup appears in the upper-right corner of the screen, press .
3. Follow the instructions on the screen.

Test the hard drive �

Windows XP and Windows 2000 � Run the Check Disk utility:

1. For Windows XP, click the Start button and click My Computer. For Windows 2000, double-click My Computer on the Windows desktop.
2. Click the Tools tab.
3. Under Error-checking, click Check Now.
4. Click Scan for and attempt recovery of bad sectors.
5. Click Start.

Windows NT� � Run the error-checking utility:

1. Click the Start button, click My Computer, and then select the hard drive that you want to check.
2. Click the right mouse button, click Properties, click Tools, and then click Check Now in the Error-checking section.

MS-DOS

Type scandisk x: at an MS-DOS prompt, where x is the hard drive letter, and then press

Run the Dell Diagnostics � . If any of the diagnostics tests fail, contact Dell.

Check the card and cable connections �

1. Turn off the computer and devices, disconnect them from their electrical outlets, wait 10 to 20 seconds, and then open the computer cover.
2. Check all card connections in the computer, and reseat any loose cards.
3. Ensure that all cables are properly connected and that all components are properly seated in their connectors and sockets.
4. Close the computer cover, reconnect the computer and devices to electrical outlets, and then turn them on.
5. Run the Dell Diagnostics.

If any of the diagnostics tests fail, contact Dell.

Check the telephone line connection � Verify that the telephone line is connected to the jack on the modem. (The jack has either a green label or a connector-shaped icon next to it.) Ensure that you hear a click when you insert the telephone line connector into the modem.

Check the telephone jack � Disconnect the telephone line from the modem and connect it to a telephone. Listen for a dial tone.

Connect the modem directly to the telephone wall jack � If you have other telephone devices sharing the line, such as

Posted by sugelang at 4:27 AM

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