Dell T7400 manual Light Pattern Problem Description Suggested Resolution

Light Pattern	Problem Description	Suggested Resolution
	Memory modules	• If two or more memory modules are
	are detected, but	installed, remove the modules
	a memory failure	(see "Memory" in your User’s Guide),
	has occurred.	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).
	A possible graphics	• Reseat any installed graphics cards
	card failure has	(see "Cards" in your User’s Guide).
	occurred.	• If available, install a working graphics
		card into your computer.
		• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).
	A possible floppy or	• Reseat all power and data cables and
	hard drive failure has	restart the computer.
	occurred.	• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).
	A possible USB failure	• Reinstall all USB devices, check cable
	has occurred.	connections, and then restart the
		computer.
		• If the problem persists, contact Dell
		(see "Contacting Dell" in your
		User’s Guide).

Quick Reference Guide

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