HP Deskpro /M Desktop PC 586/60M Compaq Deskpro Family of Personal Computers, - Page 74
UMB Upper Limit Segment, System RAM Failed
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POST Error Messages Continued Error message Probable Cause System BIOS Shadowed System BIOS copied to Shadow RAM. System Cache Error RAM cache failed the BIOS test. System CMOS Checksum Bad CMOS is corrupted or modified incorrectly. System RAM Failed at Offset, nnn System Timer Error System RAM failed. DMA, timers, etc. UMB Upper Limit Segment Address nnn Displays the address nnn of the upper limit of Upper Memory Blocks, indicating released segments of the BIOS. Video BIOS Shadowed Video BIOS successfully copied to shadow RAM. Recommended Action Status message. No action required. Run Setup. Run Setup. Replace memory modules. Replace the system board. Status message. No action required. Status message. No action required. Quick Troubleshooting Guide C-3