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BIOS Beep Codes
AWARD CODES
|
Number of beeps |
Cause |
| One long |
Memory. Usually able to fix by reseating the
memory |
| One Long, Two Short |
Video Card. Replace |
| One Long, Three Short |
Video Card. Replace |
| Continually |
Memory or video. reseat or replace |
AMI CODES
|
Number Of beeps |
Cause |
| One short |
RAM refresh, interrupt timer/controller failure. |
| Two Short |
Memory Problem. Look for error messages check
seating of memory chips replace if necessary. |
| Three Short |
Same as two beeps. |
| Four Short |
System time failure. Motherboard need to be
replaced. |
| Five Short |
CPU failure. |
| Six Short |
Keyboard control chip error. Replace keyboard. |
| Seven Short |
CPU exception error. Replace CPU. |
| Eight Short |
Video card failure. Check seating of card if fault
continues replace card. |
| Nine Short |
ROM checksum error. Replace BIOS ROM |
| Ten Short |
CMOS problem, replace motherboard. |
| Eleven Short |
L2 cache memory fail. Replace. If needed replace
motherboard also. |
| One Long, 3 Short |
Memory test failure in RAM. Replace ram. |
| One Long, Eight Short |
Display test error. Video card broken/missing,
replace. may also need to replace motherboard. |
PHOENIX CODES
| Number of beeps |
Cause |
| One, One, Three |
CMOS unreadable, replace motherboard |
| One, One, Four |
BIOS Failure |
| One, Two, One |
Failed timer chip, replace motherboard |
| One, Two, Two |
Motherboard error, replace |
| One, Two, Three |
Motherboard error, replace |
| One, Three, one |
Motherboard error, replace |
| One, Three, Four |
Motherboard error, replace |
| One, Three, Three |
Memory, Reseat or replace RAM |
| One, Four, One |
Motherboard error, replace |
| One, Four, Two |
some memory isn't working. replace RAM |
| Two, Any, Any |
Any beeps after two beeps indicate bad memory,
replace RAM. |
| Three, One, Any |
Faulty motherboard chip, replace |
| Three, Two, Four |
Keyboard controller error, replace the mother
board or the chip. |
| Three, Three, Four |
No video card, reseat it or replace. |
| Four, Two, One |
Motherboard failure, replace |
| Four, Two, Two |
Replace keyboard, if still continues replace
motherboard |
| Four, Two, Three |
As Four, Two, Two. |
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Motherboard
Trouble Shooting
The Computer-Just-Won’t-Boot-up-Period Scenario:
The following diagnostic steps relies on “beep codes” generated by
the PC speaker. It is vital to make certain your PC speaker is connected
is functional.
The motherboard’s BIOS setting should also be kept on default –
Since BIOS setting is inaccessible because the system is not able to
boot, remove the battery on the motherboard momentarily (3 sec.) and
place it back in. Or alternatively, use the “Clear CMOS” jumper on
the motherboard. Consult with the motherboard manual for instruction.
*Not all motherboards generate all beep codes mentioned below. The
provided diagnosis and solution in the documented should not be assumed.
Please seek manufacture’s help in such case.
Step 1: Power off - Remove any/all video
adapter - power back on.
Diagnosis: If boot failure is caused by the video adapter, then the
system should generate 8 beeps. Solution: Replace video adapter. * Some
motherboards don’t generate this beep code. In such case, try another
video adapter, preferably a PCI version. Because there is only one AGP
slot and several PCI slots. If the video failure is due to a faulty slot
instead of the video card, another AGP video adapter would just fail
again without producing any possible conclusive result.
If no beep code has been produced Step 2:
Power off - Remove any/all RAM modules – Power back on.
Diagnosis: If boot failure is caused by the memory subsystem of the
motherboard or faulty RAM modules, then the system should generate
continuous low-tone long beeps.
Solution: Using only one single module and place it in a different slot.
If this fails, try all other memory slots with each module. If different
module solves the problem, then replace the memory module. (If this
solves the problem, motherboard should still be replaced with the reason
of bad memory slot(s)) If more than 1 memory module are being used and
each works fine by itself, then you have a memory compatibility problem.
Solution is to use only 1 module or find compatible modules.
If no beep code has been produced
Step 3: Power off – Remove the CPU –
Power back on.
Diagnosis: The system should generate the same kind of continuous beeps
as described above. This failure indicates either a faulty CPU or a
faulty CPU socket on the motherboard.
Solution: Try installing a known working CPU for testing purpose. If
this solved the problem, replace the faulty CPU. If the motherboard
still fails, replace the motherboard.
If still no beep code has been produced, replace the motherboard.
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