Dell T7400 manual Light Pattern

Light Pattern	Problem Description	Suggested Resolution
	No memory	• If two or more memory modules are
	modules are detected.	installed, remove the modules
		(see "Memory" in your User’s Guide),
		reinstall one module, and then restart
		the computer. If the computer starts
		normally, continue to install additional
		memory modules (one at a time) until
		you have identified a faulty module or
		reinstalled all modules without error.
		• If available, install working memory of
		the same type into your computer
		(see "Memory" in your User’s Guide).
		• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).
	System board failure	Contact Dell (see "Contacting Dell" in
	has occurred.	your User’s Guide).
	Memory modules are	• Ensure that no special requirements
	detected, but	for memory module/connector
	a memory	placement exist (see "Memory" in
	configuration or	your User’s Guide).
	compatibility	• Ensure that the memory you are using
	error exists.	is supported by your computer
		(see "Memory" in your User’s Guide).
		• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).
	A possible system	• Perform the procedures in "Restoring
	board resource and/or	Your Operating System" in your
	hardware failure has	User’s Guide.
	occurred.	• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).

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