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CBI/CGI Technical Reference
Chassis Plans A-3
BIOS ERROR
M
ESSAGES
(
CONTINUED)
Message Description
CH-2 Timer Error Most AT standard system boards include two timers. An error
with Timer #1 is a fatal error, explained in BIOS Beep Codes
earlier in this appendix. If an error occurs with Timer #2, this
error message appears.
CMOS Battery State Low There is a battery in the system which is used for storing the
CMOS values. This battery appears to be low in power and
needs to be replaced.
CMOS Checksum Failure After the CMOS values are saved, a checksum value is generated
to provide for error checking. If the previous value is different
from the value currently read, this error message appears. To
correct the error, run the BIOS Setup Utility.
CMOS Display Type Mismatch The type of video stored in CMOS does not match the type
detected by the BIOS. Run the BIOS Setup Utility to correct the
error.
CMOS Memory Size Mismatch If the BIOS finds the amount of memory on the system board to
be different from the amount stored in CMOS, this error message
is generated. Run the BIOS Setup Utility to correct the error.
CMOS System Options Not Set The values stored in the CMOS are either corrupt or nonexistent.
Run the BIOS Setup Utility to correct the error.
CMOS Time & Date Not Set Use Standard Setup in the BIOS Setup Utility to set the date and
time of the CMOS.
D: Drive Error The BIOS is not receiving any response from hard disk drive D:.
Check Standard Setup using the BIOS Setup Utility to see if the
correct hard disk drive has been selected.
D: Drive Failure The BIOS cannot get any response from hard disk drive C:. It
may be necessary to replace the hard disk.
Diskette Boot Failure The disk used to boot up in floppy drive A: is corrupt, which
means it cannot be used to boot up the system. Use another
boot disk and follow the instructions on the screen.
Display Switch Not Proper Some systems require that a video switch on the processor be
set to either color or monochrome, depending upon the type of
video being used. To correct this situation, set the switch
properly after the system is powered off.
DMA Error An error has occurred in the DMA controller on the processor
board.
DMA #1 Error An error has occurred in the first DMA channel on the processor
board.
DMA #2 Error An error has occurred in the second DMA channel on the
processor board.
FDD Controller Failure The BIOS is not able to communicate with the floppy disk drive
controller. Check all appropriate connections after the system is
powered off.