| Message |
Definition |
Probable Causes |
8042
Gate - A20 Error |
Gate A20 of keyboard controller is
faulty. |
Defective system board. |
| Address Line Short! |
Address decoding not properly executed
on system board. |
Defective system board. |
| C: Drive Error |
No response from drive C. |
Incorrect drive settings in system setup
program. |
| Cache Memory Bad. Do Not Enable Cache! |
Cache memory subsystem not functioning
properly. |
Defective microprocessor or cache. |
| CH-2 Timer Error |
Error occurred in system timer 2. |
Defective system board. |
| CMOS Battery State Low |
System battery not maintaining contents
of NVRAM. |
System battery at or near depletion of
its charge. |
| CMOS Checksum Failure |
NVRAM checksum value changed since NVRAM
contents were saved. |
Incorrect settings in system setup
program. |
| CMOS Display Type Mismatch |
Video type in NVRAM does not match type
of video system installed. |
Video type detected by system BIOS does
not match type actually installed. |
| CMOS Memory Size Mismatch |
Amount of main memory installed on
system board does not match amount reflected by NVRAM. |
Amount of main memory detected by system
BIOS does not match amount actually installed. |
| CMOS System Options Not Set |
System option parameters in NVRAM not
set. |
One or more system configuration
settings in system setup program are corrupted or
improperly set. |
| CMOS Time and Date Not Set |
System configuration settings for time
and date in system setup program appear to be incorrect. |
Time and/or Date categories in system
setup program need resetting. |
| Diskette Boot Failure |
System cannot boot from diskette in
drive A. |
Diskette in drive A probably does not
contain bootable operating system, or bootable operating
system is corrupt. |
| DMA #1 Error DMA #2 Error
DMA Error
|
Error condition occurred in DMA channel
1. Error condition occurred in DMA channel 2.
Error condition occurred in DMA controller.
|
Defective system board. |
| FDD Controller Failure |
System BIOS cannot communicate with
diskette/tape drive controller. |
Diskette category in system setup
program not set to Auto as required. |
| HDD Controller Failure |
System BIOS cannot communicate with EIDE
hard-disk drive interface. |
Defective hard-disk drive controller
card (if one is installed).
Defective system board.
Hard Disk category in system setup program not set to
Auto. |
| INTR #1 Error INTR #2 Error
|
Failure detected in interrupt channel 1
during POST. Failure detected in interrupt channel 2
during POST.
|
Defective system board. |
| Invalid Boot Diskette |
System cannot boot from diskette in
drive A. |
Diskette in drive A contains no
operating system.
Diskette in drive A is faulty.
Drive A interface or power cable faulty or improperly
connected.
Drive A defective. |
| KB/Interface Error |
Error detected at keyboard connector. |
Keyboard improperly connected or faulty. |
| Keyboard Error |
Keyboard has timing problem. |
Keyboard may still operate if this
problem is detected. To disable reporting of keyboard
problems, set Keyboard Errors category in system setup
program to Do Not Report. |
