Dell MTC2, G7279, DMC manual Memory module/memory, Connector placement, Requirements see, See

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Light Pattern	Problem Description	Suggested Resolution
	Memory modules are detected, but a	• Ensure that there are no special
	memory configuration or	memory module/memory
A B C D	compatibility error exists.	connector placement
		requirements (see page 75).
		• Verify that the memory modules
		that you are installing are
		compatible with your computer
		(see page 75).
		• If the problem persists, contact
		Dell (see page 90).
	A possible expansion card failure has	1 Determine if a conflict exists by
	occurred.	removing a card and then
A B C D		restarting the computer.
		2 If the problem persists, reinstall
		the cards 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 49).

	4	If the problem persists, contact
		Dell (see page 90).
Other failure has occurred.	• Ensure that the cables are
		properly connected from the hard
A B C D		drive, CD drive, and DVD drive
		to the system board (see

page 70).

• If the problem persists, contact Dell (see page 90).

= yellow = green = off

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Advanced Troubleshooting