Dell N8151 manual Determine if a conflict exists by, Removing a card not the graphics, Guide

Light Pattern	Problem Description	Suggested Resolution
	A possible expansion card failure has	1	Determine if a conflict exists by
	occurred.		removing a card (not the graphics
			card) and then restarting the
			computer. For more information on
			removing a card, see your User’s
			Guide.
		2	If the problem persists, reinstall the
			card that you removed, remove a
			different card, and then restart the
			computer.
		3	Repeat this process for each card. If
			the computer starts normally,
			troubleshoot the last card removed
			from the computer for resource
			conflicts (see"Resolving Software and
			Hardware Incompatibilities" on
			page 32).
		4	If the problem persists, contact Dell.
			For instructions on contacting Dell,
			see your User’s Guide.
	A possible graphics card failure has	• If the computer has a graphics card,
	occurred.		remove the card, 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 or the
			computer has integrated graphics,
			contact Dell. For instructions on
			contacting Dell, see your User’s Guide.
	A possible floppy or hard drive failure	Reseat all power and data cables and
	has occurred.	restart the computer.

A possible USB failure has occurred.

Reinstall all USB devices, check cable connections, and then restart the computer.

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