Dell U3525 Software and Hardware, Incompatibilities see, See your User’s Guide, Your User’s Guide

Light Pattern			Problem Description	Suggested Resolution
			A possible system board resource and/or	Perform the procedures in "Resolving
			hardware failure has occurred.	Software and Hardware
A	B	C	D	Incompatibilities" (see page 25).
				If the problem persists, contact Dell. For
				more information on contacting Dell,
				see your User’s Guide.
			A possible expansion card failure has	1	Determine if a conflict exists by
			occurred.		removing a card (not a graphics card)
A	B	C	D		and 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 25).
				4	If the problem persists, contact Dell.
					For more information on contacting
					Dell, see your User’s Guide.
			Another failure has occurred.	• Ensure that the cables are properly
					connected to the system board from
A	B	C	D		the hard drive, CD drive, and DVD
					drive.
				• If the problem persists, contact Dell.
					For more information on contacting
					Dell, see your User’s Guide.
			The computer is in a normal operating	None.
			condition after POST.
A	B	C	D

= yellow = green = off

Quick Reference Guide

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