Advanced Troubleshooting; Diagnostic Lights - Dell DIMENSION XPS GEN 3 WHL User Manual

Advanced Troubleshooting

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 computer has four lights labeled "A," "B," "C," and "D" on
the back panel (see page 65). The lights can be yellow or green. When the computer starts
normally, the lights flash. After the computer starts, all four lights display solid green. If the
computer malfunctions, the color and sequence of the lights identify the problem.
Light Pattern Problem Description
The computer is in a normal off
condition or a possible pre-BIOS failure
has occurred.
A B C D
A possible processor failure has occurred. Reinstall the processor (see page 97)
A B C D
= yellow
= green
= off
Suggested Resolution
Plug the computer into a working
electrical outlet and press the power
button.
and restart the computer.
Advanced Troubleshooting
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