System beep codes refer to the types of errors encountered by the system that cannot be reported on the ASCII system console during regular booting. The beep codes are a series of audible tones that helps you identify the encountered error.
The following table lists the beep codes you might encounter.
Code
|
Explanation
|
Fatal?
|
Corrective action
|
|---|
1-1-3
|
CMOS write/read failure.
|
Yes
|
Replace the system board.
|
1-1-4
|
BIOS checksum failure.
|
Yes
|
Replace the system board.
|
1-2-1
1-2-2
1-2-3
|
Programmable interval-timer failure.
DMA initialization failure.
DMA page register write/read failure.
|
Yes
|
Replace the system board.
|
1-3-1
|
Main-memory refresh verification failure.
|
Yes
|
Remove and reseat the DIMMs. If the problem persists, replace one or more DIMMs. If the problem still persists, replace the system board.
|
1-3-2
|
No memory installed.
|
Yes
|
Remove and reseat the DIMMs. If the problem persists, replace one or more DIMMs. If the problem still persists, replace the system board.
|
1-3-3
|
Chip or data line failure in the first 64 KB of main memory.
|
Yes
|
Remove and reseat the DIMMs. If the problem persists, replace the DIMMs. If the problem still persists, replace the system board.
|
1-3-4
|
Odd/even logic failure in the first 64 KB of main memory.
|
1-4-1
|
Address line failure in the first 64 KB of main memory.
|
1-4-2
|
Parity failure in the first 64 KB of main memory.
|
2-1-1
through
2-4-4
|
Bit failure in the first 64 KB of main memory.
|
3-1-1
|
Slave DMA-register failure.
|
Yes
|
Replace the system board.
|
3-1-2
|
Master DMA-register failure.
|
3-1-3
|
Master interrupt-mask register failure.
|
3-1-4
|
Slave interrupt-mask register failure.
|
3-2-4
|
Keyboard-controller test failure.
|
Yes
|
Remove any keyboards. If the error persists, replace the system board.
|
3-3-1
|
CMOS failure.
|
Yes
|
Replace the CMOS lithium battery. If the problem persists, run the system board test in the diagnostics.
|
3-3-2
|
System configuration check failure.
|
Yes
|
Replace the system board.
|
3-3-3
|
Keyboard controller not detected.
|
3-3-4
|
Screen initialization failure.
|
3-4-2
|
Screen-retrace test failure.
|
3-4-3
|
Search for video ROM failure
|
4-2-1
|
No timer tick.
|
4-2-2
|
Shutdown failure.
|
4-2-3
|
Gate A20 failure.
|
4-2-4
|
Unexpected interrupt in protected mode.
|
Yes
|
Ensure that all expansion cards are properly seated, and then reboot the system.
|
4-3-1
|
Improperly seated or faulty DIMMs.
|
Yes
|
Remove and reseat the DIMMs. If the problem persists, replace the DIMMs. If the problem still persists, replace the system board.
|
4-3-3
|
Defective system board.
|
Yes
|
Replace the system board.
|
4-3-4
|
Time-of-day clock stopped.
|
Yes
|
Replace the CMOS lithium battery. If the problem persists, replace the system board.
|
4-4-1
|
Super I/O chip failure; defective system board.
|
Yes
|
Replace the system board.
|
4-4-2
|
Parallel-port test failure; defective system board.
|
4-4-4
|
Cache test failure; defective microprocessor.
|
Yes
|
Remove and reseat the microprocessor. If the problem still persists, replace the microprocessor.
|
