Dell 210L manual Additional module. Continue until you, Have identified a faulty module or

Light Pattern	Problem Description	Suggested Resolution
	No memory modules are detected.	• If you have one memory module installed,
		reinstall it and restart the computer. For
		information on reinstalling memory
		modules, see your online User’s Guide.
		• If you have two or more memory modules
		installed, remove the modules, reinstall one
		module, 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.
		• If the problem persists, contact Dell. For
		information on contacting Dell, see your
		online User’s Guide.
	Memory modules are detected, but a memory	• Ensure that no special memory
	configuration or compatibility error exists.	module/memory connector placement
		requirements exist.
		• Verify that the memory modules that you
		are installing are compatible with your
		computer.
		• If the problem persists, contact Dell. For
		information on contacting Dell, see your
		online User’s Guide.
	A failure has occurred.	• Ensure that the cables are properly
		connected to the system board from the
	This pattern also displays when you enter	hard drive, CD drive, and DVD drive.
		• Check the computer message that appears
	system setup and may not indicate a
		on your monitor screen.
	problem.
		• If the problem persists, contact Dell. For
		information on contacting Dell, see your
		online User’s Guide.
	After POST is complete, all four diagnostic	None.
	lights turn green briefly before turning off to
	indicate a normal operating condition.

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