Dell ND218 manual Then restart the computer. If, Additional module. Continue until, Your computer

Light Pattern	Problem Description	Suggested Resolution
	No memory modules are detected.	• If you have one memory module
		installed, reinstall it and restart the
		computer.
		• 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.
	System board failure has occurred.	Contact Dell for technical assistance.
	Memory modules are detected, but a	• Ensure that no special memory
	memory configuration or compatibility	module/memory connector placement
	error exists.	requirements exist.
		• Verify that the memory modules that
		you are installing are compatible with
		your computer.
		• Reinstall the memory modules and
		restart the computer.
		• If the problem persists, contact Dell.
	Routine system activity preceding video	Watch your monitor for on-screen
	initialization.	messages.

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