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- Troubleshooting Your LifeBook
*System CMOS checksum bad – run SETUP
BIOS CMOS RAM has been corrupted or modified incorrectly, perhaps by an application program
that changes data stored in BIOS memory. Run Setup and reconfigure the system.
*System RAM Failed at offset: nnnn
System memory failed at offset nnnn of in the 64k block at which the error was detected. This means
that there is a fault in your built-in memory. If you continue to operate, you risk corrupting your data.
Contact your support representative for repairs.
nnnn System RAM Passed
Where nnnn is the amount of system memory in
kilobytes successfully tested.
*System timer error
The timer test failed. The main clock that operates the computer is faulty. Requires repair of system
board. Contact your support representative for repairs.
UMB upper limit segment address: nnnn
Displays the address of the upper limit of Upper Memory Blocks, indicating released segments of the
BIOS memory which may be reclaimed by a virtual memory manager.
Video BIOS shadowed
Video BIOS successfully copied to shadow RAM.
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