Dell 9150 manual Light Pattern Problem Description Suggested Resolution, Restart the computer, See

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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