224 Advanced Troubleshooting
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Memory modules are detected, but a memory
failure has occurred.
1 Reseat 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 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 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.
Light Pattern Problem Description Suggested Resolution
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