Dell XPS 600 Diagnostic Lights, Light Pattern Problem Description Suggested Resolution

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 "1," "2," "3," and "4" on the front panel (see "Front View (Doors Open)" on page 72). 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	Suggested Resolution
	The computer is in a normal "off" condition or	Plug the computer into a working electrical
	a possible pre-BIOS failure has occurred.	outlet. Also see "Power Problems" on page 49.
	The diagnostic lights are not lit after the
	system successfully boots to the operating
	system.
	A possible processor failure has occurred.	Reinstall the processor (see "Processor" on
		page 113) and restart the computer.

Memory modules are detected, but a memory failure has occurred.

•If you have two or more memory modules installed, remove the modules, reinstall one module (see "Installing Memory" on page 80), 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 of the same type into your computer (see "Installing Memory" on page 80).

•If the problem persists, contact Dell (see

"Contacting Dell" on page 142).

Advanced Troubleshooting

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