BIOS Error Messages
Table 15 lists the error messages and provides a brief description of each.
CMOS Battery Low
The battery may be losing power. Replace the battery soon.
CMOS Checksum Bad
The CMOS checksum is incorrect. CMOS memory may have been corrupted. Run Setup to reset values.
Memory Size Decreased
Memory size has decreased since the last boot. If no memory was removed, then memory may be bad.
No Boot Device Available
System did not find a device to boot.