Dell WHL, WHM manual C D yellow

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
green	No memory modules are detected.	1 Reseat the memory modules to
yellow			ensure that your computer is
			successfully communicating with
A B C D yellow
			the memory.
yellow		2	Restart the computer.
		3	If the problem still exists, remove
			all the memory modules and
			install one memory module in
			connector DIMM_1.
		4	Restart the computer.
			The following message appears:
			Alert! Operating in Debug
			Mode. Please Populate
			Memory in Pairs for
			Normal Operation.
		5	Press <F1> to boot to the
			operating system.
		6	Run the Dell Diagnostics.
		7	If the memory module passes, shut
			down the computer, remove the
			memory module, and then repeat the
			process with the remaining memory
			modules until a memory error occurs
			during start-up or diagnostic testing.
			If the first memory module tested is
			defective, repeat the process with the
			remaining modules to ensure that the
			remaining modules are not defective.
		8	When the defective memory module
			is identified, contact Dell for
			a replacement.

NOTE: If necessary, the computer can operate in debug mode until new memory modules are installed.

= yellow = green = off

34

Quick Reference Guide