Advanced Troubleshooting; Diagnostic Lights - Dell Precision 350 User Manual

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Advanced Troubleshooting

Dell Precision™ Workstation 350 User's Guide
Diagnostic Lights
Beep Codes
Dell Diagnostics
Drivers
Using System Restore
Resolving Software and Hardware Incompatibilities

Diagnostic Lights

To help you troubleshoot a problem, your computer is equipped with four lights on the back panel labeled "A," "B," "C," and "D". These lights can be yellow or
green. When the computer starts normally, the lights flash. After the computer starts, the lights remain green. If the computer malfunctions, the color and
sequence of the lights identify the problem.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the System Information Guide.
Light Pattern Problem Description
Normal off condition or possible power
failure.
Possible BIOS failure; the computer is in
the recovery mode.
Possible microprocessor failure.
Memory modules are detected, but a
memory failure has occurred.
Possible expansion card failure.
Possible video card failure or bad on-
board video.
Possible floppy or hard drive failure.
Suggested Resolution
Verify that the computer power cable is plugged into the computer and a working electrical
outlet. Press the power button.
Run the BIOS Recovery utility, wait for recovery completion, and then restart the computer.
Reinstall the microprocessor, and restart the computer.
Remove and reinstall all memory modules and CRIMMs. Ensure that all the connector tabs
are locked. Restart the computer.
Install the memory modules in memory connectors RIMM 1 (located closest to the
microprocessor) and RIMM 2 and ensure that, if no additional memory is used, CRIMMs are
installed in memory connectors RIMM 3 and RIMM 4.
If you installed memory modules in memory connectors RIMM3 and RIMM4 that were not
purchased from Dell, remove the modules and replace them with the CRIMMs that were
originally installed in your computer.
If available, install Dell memory of the same type into your computer.
If the problem persists, contact Dell.
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
and Hardware Incompatibilities").
4. If the problem persists, contact
If the computer has a video card, remove the card and reinstall it.
If the problem persists or the computer has integrated video,
Check all power and data cable connections, and then restart the computer.
"Resolving Software
Dell.
contact Dell.