Troubleshooting Tools
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Troubleshooting Tools
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 front panel (see page 55). The lights can be yellow or green. When the computer starts
normally, all four lights flash solid green. After the computer starts and the user accesses the
operating system, all four lights go off. If the computer malfunctions, the color and sequence of the
lights identify the problem.
Light Pattern
Problem Description
Suggested Resolution
The computer is starting normally.
None.
• The computer is in a normal on condition
and the operating system is running.
• The computer is in a normal off condition.
• None.
• If the computer is off, plug it into a working
electrical outlet and press the power button.
A possible processor failure has occurred.
Contact Dell (see page 118).
C7565bk1.book Page 43 Wednesday, January 26, 2005 1:37 PM
