Dell C7565 manual Diagnostic Lights, Light Pattern Problem Description Suggested Resolution

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).

Troubleshooting Tools

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