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Appendix J− − AMIBIOS Error messages and Beep Codes
Errors can occur during POST (Power On Self Test) which is performed every time the system is powered on. Fatal
errors, which prevent the system from continuing the boot process, are communicated through a series of audible
beeps. Other errors are displayed in the following format:
For most displayed error messages, there is only one message. If a second message appears, it is "RUN SETUP". If
this message occurs, press <F1> to run AMIBIOS Setup.
BEEP CODES
Beeps
Error Message
1
Refresh Failure
2
Parity Error
3
Base 64 KB Memory Failure
4
Timer Not Operational
5
Processor Error
6
8042 - Gate A20 Failure
7
Processor Exception Interrupt Error
8
Display Memory Read/Write Error
9
ROM Checksum Error
10
CMOS Shutdown Register Rd/Wrt Error
1 LONG
VIDEO ERROR
3 SHORT
ERROR MESSAGES
Error Message
8042 Gate - A20 Error
Address Line Short!
Cache Memory Bad, Do Not Enable Cache!
CH-2 Timer Error
CMOS Battery State Low
CMOS Checksum Failure
CMOS System Options Not Set
CMOS Display Type Mismatch
CMOS Memory Size Mismatch
ERROR Message Line 1
ERROR Message Line 2
The memory refresh circuitry on the motherboard is faulty.
Parity is not supported on this product, will not occur.
Memory failure in the first 64 KB.
Memory failure in the first 64 KB of memory, or Timer 1 on the motherboard is not
functioning.
The CPU on the motherboard generated an error.
The keyboard controller (8042) may be bad. The BIOS cannot switch to protected
mode.
The CPU generated an exception interrupt.
The system video adapter is either missing or its memory is faulty. This is not a fatal
error.
ROM checksum value does not match the value encoded in BIOS.
The shutdown register for CMOS RAM failed.
Video Controller failure
Gate A20 on the keyboard controller (8042) is not working. Replace the 8042.
Error in the address decoding circuitry on the motherboard.
Cache memory is defective. Replace it.
Most AT systems include two timers. There is an error in timer 2.
CMOS RAM is powered by a battery. The battery power is low. Replace the battery.
After CMOS RAM values are saved, a checksum value is generated for error checking. The
previous value is different from the current value. Run AMIBIOS Setup.
The values stored in CMOS RAM are either corrupt or nonexistent. Run Setup.
The video type in CMOS RAM does not match the type detected by the BIOS. Run AMIBIOS
Setup.
The amount of memory on the motherboard is different than the amount in CMOS RAM. Run
AMIBIOS Setup.
Description
Explanation
Advanced/RH Technical Product Specification • • Page 44
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