Dell Precision 650: Light Pattern Problem Description Suggestion Resolution

Light Pattern Problem Description Suggestion Resolution: Dell Precision 650

Table of contents

Light Pattern Problem Description Suggestion Resolution

No memory modules are

1 Reset the memory modules to ensure that your

detected.

computer is successfully communicating with the

memory.

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2 Restart the computer.

3 If the problem still exists, remove all the memory

modules and install one memory module in

memory module connector 4.

4 Restart the computer.

The following message appears: Alert!

Operating in Debug Mode. Please

Populate Memory in Pairs for Normal

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Operation.

5 Press <F1> to boot to the operating system.

6 Run the System Memory test group in the Dell

Diagnostics.

7 If the memory module passes, shut down the

computer, remove the memory module, and 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.

System board failure has

Perform the procedures in "System Board Problems" in

occurred.

your User’s Guide.

If the problem persists, contact Dell.

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40 Setup and Quick Reference Guide