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

A possible microprocessor

Reinstall the microprocessor and restart the computer.

failure has occurred.

A B C D

Memory modules are

1 Reset the memory modules to ensure that your

detected, but a memory

computer is successfully communicating with the

failure has occurred.

memory.

A B C D

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.

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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 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.

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38 Setup and Quick Reference Guide