Dell XPS 600 Card see Removing PCI and PCI, Then restart the computer, Computer, See Memory on

w w w . d e l l . c o m s u p p o r t . d e l l . c o m

Light Pattern	Problem Description	Suggested Resolution
	A possible graphics card failure has occurred.	• If the computer has a graphics card, remove
		the card (see "Removing PCI and PCI
		Express Cards" on page 89), reinstall it, and
		then restart the computer.
		• If the problem still exists, install a graphics
		card that you know works and restart the
		computer.
		• If the problem persists, contact Dell (see
		"Contacting Dell" on page 142).
	A possible floppy drive or hard drive failure has	Reseat all power and data cables and restart
	occurred.	the computer.
	A possible USB failure has occurred.	Reinstall all USB devices, check cable
		connections, and then restart the computer.

No memory modules are detected.	• If you have two or more memory modules
	installed, remove the modules, reinstall one
	module (see "Installing Memory" on
	page 80), 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
	"Installing Memory" on page 80).
	• If the problem persists, contact Dell (see
	"Contacting Dell" on page 142).
Memory modules are detected, but a memory	• Ensure that no special memory
configuration or compatibility error exists.	module/memory connector placement
	requirements exist (see "Memory" on
	page 79).
	• Verify that the memory modules that you are
	installing are compatible with your computer
	(see "Memory" on page 79).
	• If the problem persists, contact Dell (see
	"Contacting Dell" on page 142

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Advanced Troubleshooting