Dell C7565 manual Reinstall an additional module. Continue, Reinstalled all modules without error

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Light Pattern	Problem Description	Suggested Resolution
	Memory modules are detected, but a memory	• If you have two or more memory modules
	failure has occurred.	installed, remove the modules, reinstall one
		module (see page 63), 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
		page 63).
		• If the problem persists, contact Dell (see
		page 118).
	A possible graphics card failure has occurred.	• If the computer has a graphics card, remove
		the card, reinstall it (see page 70), 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 or the computer has
		integrated graphics, contact Dell (see
		page 118).
	A possible floppy or hard drive failure has	Reseat all power and data cables and restart
	occurred.	the computer.
		• If the problem persists, contact Dell (see
		page 118).
	A possible USB failure has occurred.	Reinstall all USB devices, check cable
		connections, and then restart the computer.
		• If the problem persists, contact Dell (see
		page 118).

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