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Memory problems
Memory symptom
The amount of system memory
displayed is less than the
amount of physical memory
installed.
Microprocessor problems
Microprocessor symptom
The computer emits a
continuous tone during POST.
(The startup (boot)
microprocessor is not working
properly.)
Monitor problems
Monitor symptom
The screen is blank.
Only the cursor appears.
Suggested action
1. Verify that:
v The memory modules are seated properly.
v You have installed the correct type of memory.
v If you changed the memory, you updated the memory configuration with the
Configuration/Setup Utility program.
v All banks of memory on the DIMMs are enabled. The computer might have
automatically disabled a DIMM bank when it detected a problem or a DIMM
bank could have been manually disabled.
2. Check the POST error log for error message 289:
v If the DIMM was disabled by a system-management interrupt (SMI), replace
the DIMM.
v If the DIMM was disabled by the user or by POST:
a. Start the Configuration/Setup Utility program.
b. Enable the DIMM.
c. Save the configuration and restart the computer.
If the problem remains, call for service.
Suggested action
Call for service.
Suggested action
Verify that:
v The computer power cord is plugged into the computer and a working electrical
outlet.
v The monitor cables are connected properly.
v The monitor is turned on and the Brightness and Contrast controls are adjusted
correctly.
If the problem remains, call for service.
Call for service.
Chapter 5. Solving problems
47
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