Dell XPS 400 Light Pattern Problem Description Suggested Resolution, Restart the computer, See

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Light Pattern	Problem Description	Suggested Resolution
	A possible graphics card failure has	• If the computer has a graphics card,
	occurred.	remove the card (see page 76), reinstall
		it, and then restart the computer.
		• If the problem still exists, install a
		graphics card that you know works and
		restart the computer.
		• If the problem persists, contact Dell
		(see page 126).
	A possible floppy drive or hard drive	Reseat all power and data cables and
	failure has occurred.	restart the computer.
	A possible USB failure has occurred.	Reinstall all USB devices, check cable
		connections, and then restart the
		computer.
	No memory modules are detected.	• If you have two or more memory
		modules installed, remove the
		modules, reinstall one module (see
		page 74), 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 page 74).
		• If the problem persists, contact Dell
		(see page 126).
	Memory modules are detected, but a	• Ensure that no special memory
	memory configuration or compatibility	module/memory connector placement
	error exists.	requirements exist (see page 72).
		• Verify that the memory modules that
		you are installing are compatible with
		your computer (see page 72).
		• If the problem persists, contact Dell
		(see page 126).

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