Dell Precision 450 Guide De Configuration Et De Référence Rapide page 40

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40
Setup and Quick Re ference Guide
Problem Description
No memory modules are
detected.
System board failure has
occurred.
Suggestion Resolution
1
Reset the memory modules to ensure that your
computer is successfully communicating with the
memory.
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
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.
Perform the procedures in "System Board Problems" in
your User's Guide.
If the problem persists, contact Dell.