Diagnostic Lights - Dell Dimension 5000 Service Manual

Blinking yellow
Solid green and a beep code during
POST
Solid green power light and no beep
code and no video during POST
Solid green power light and no beep
code but the computer locks up
during POST
Diagnostic Lights
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
To help you troubleshoot a problem, your small form factor, small desktop, and small mini-tower computers have four lights labeled "A," "B," "C," and "D" on
the back panel. The lights can be yellow or green. When the computer starts normally, the patterns or codes on the lights change as the boot process
completes. If the POST portion of system boot completes successfully, all four lights display solid green. If the computer malfunctions during the POST process,
the pattern displayed on the lights may help identify where in the process the computer halted.
NOTE: The orientation of the diagnostic lights may vary depending on the system type. The diagnostic lights can appear either vertical or horizontal.
Y = Yellow
G = Green
Light Pattern Problem Description
The computer is in a normal off
condition or a possible pre-BIOS
failure has occurred.
A possible BIOS failure has
occurred; the computer is in the
recovery mode.
A possible processor failure has
occurred.
Memory modules are detected, but
a memory failure has occurred.
A possible expansion card failure
has occurred.
A possible graphics card failure has
occurred.
A possible floppy or hard drive
failure has occurred.
A possible USB failure has
occurred.
A power supply or system board failure has occurred.
A problem was detected while the BIOS was executing.
The monitor or the graphics card may be faulty or
incorrectly installed.
An integrated system board device may be faulty.
Suggested Resolution
Plug the computer into a working electrical outlet and press the power button.
Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.
Reinstall the processor and restart the computer.
If you have one memory module installed, reinstall it and restart the computer. See "Memory"
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for instructions on how to remove and install memory modules.
If you have two or more memory modules installed, remove the modules, reinstall one module,
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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 modules of the same type into your computer.
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If the problem persists, contact Dell.
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Determine if a conflict exists by removing a card (not the graphics card) and then restarting
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the computer.
If the problem persists, reinstall the card that you removed, remove a different card, and then
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restart the computer.
Repeat this process for each card. If the computer starts normally, troubleshoot the last card
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removed from the computer for resource conflicts.
Move each card one at a time to a different PCI slot and restart the computer after each move.
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If the problem persists, contact Dell.
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If the computer has a graphics card, remove the card, reinstall it, and then restart the
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computer.
If the problem still exists, install a graphics card that you know works and restart the
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computer.
If the problem persists or the computer has integrated graphics, contact Dell.
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Reseat all power and data cables and restart the computer.
Reinstall all USB devices, check cable connections, and then restart the computer.
identified.
If the computer does not boot, contact Dell for technical
assistance.
Check the

diagnostic lights

to see if the specific problem is
identified. Also, see "Power Problems."
See "Beep Codes" for instructions on diagnosing the beep
code. Also, check the diagnostic lights
problem is identified.
Check the diagnostic lights to see if the specific problem is
identified. See "Video and Monitor Problems."
Check the diagnostic lights to see if the specific problem is
identified. If the problem is not identified, contact Dell for
technical assistance.
to see if the specific