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Chapter 6. Troubleshooting 59
Memory problems
Symptom Action
The amount of memory
displayed is less than the
amount of memory
installed.
The amountof availablememory shown mightbe somewhat
less than expected because of basic input/output system
(BIOS) shadowing and other resource requirements (such as
ACPI and USB). Verify that:
1. Youhave installed the correct type of DIMMs for your
computer.See “Installing memory” on page 40.
2. The DIMMsare properly installed and securely
connected.
3. If you added or removed memory, you saved the new
configuration before exiting from the IBM Setup Utility
program.
If the problem persists, run the memory test from the
diagnostic program supplied with your computer. (See
“Running the IBM Enhanced Diagnostics program” on page
66 for further information.) The computer might have
detecteda badDIMM andautomaticallyreallocated memory
so that it could continue to operate.
If you cannot correct the problem, have the computer
serviced.