Dell H7228 If you have one memory module, Restart the computer, If you have two or more memory

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Light Pattern	Problem Description	Suggested Resolution
	Memory modules are detected, but a	• If you have one memory module
	memory failure has occurred.		installed, reinstall it (see page 68)
A B C D			and restart the computer.
		• If you have two or more memory
			modules installed, remove the
			modules, reinstall one module
			see page 68), 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 68).
		• If the problem persists, contact
			Dell (see page 83).
	A possible expansion card failure	1	Determine if a conflict exists by
	has occurred.		removing a card (not the video
A B C D			card) (see page 65) and then
			restarting the computer.
		2	If the problem persists, reinstall the
			card that you removed, remove a
A B C D			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 52).
		4	If the problem persists, contact
			Dell (see page 83).

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Advanced Troubleshooting