Dell YH242 Light Pattern Problem Description Suggested Resolution, Identified a faulty module or

Light Pattern	Problem Description	Suggested Resolution
	Memory modules are detected, but a	• If two or more memory modules are
	memory failure has occurred.	installed, remove the modules (see
		"Removing Memory" on page 85), then
		reinstall one module (see "Installing
		Memory" on page 83) and restart the
		computer. If the computer starts
		normally, continue to install additional
		modules (one at a time) 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 "Installing Memory" on
		page 83).
		• If the problem persists, contact Dell
		(see "Contacting Dell" on page 137).
	A possible graphics card failure has	• Reseat any installed graphics card (see
	occurred.	"Cards" on page 86).
		• If available, install a working graphics
		card into your computer.
		• If the problem persists, contact Dell
		(see "Contacting Dell" on page 137).
	A possible floppy drive or hard drive	Reseat all power and data cables.
	failure has occurred.

A possible USB failure has occurred.

Reinstall all USB devices and check all cable connections.

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