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What do the beep codes mean?

Published on 09-17-2008  | 

True story - We had a local customer whose computer was beeping constantly through its PC speaker, even though it seemed to be working perfectly. Our customer happened to be a retired navy man who knew Morse code very well. After a couple hours of listening to the beeping he found two Morse code messages that he believed we overlaid on top of one and other. According to our customer, the messages were "Why aren't you listening to me" and "Can't you hear me."

While we would never doubt the sincerity of one of our customers, typically BIOS beep codes are pretty simple to figure out. Use the charts below to learn what your computer is trying to tell you when it seems to be beeping uncontrollably.

IBM BIOS BEEP CHART:

BEEPS
ERROR
DESCRIPTION
1 Short
Completely normal, no errors detected.
2
Short
Initialization Error, DMA,
ROM, Floppy, Serial or Parallel
1
Long, 1 Short
Motherboard malfunction
1
Long, 2 Short
Video card malfunction
or problem with video RAM
1
Long, 3 Short
Video card malfunction
No
Beeping
Bad power supply or system
board (or no PC speaker hooked up)
Continuous
Beeping
Bad power supply, processor,
or system board
Repeating
Short
Bad power supply, processor,
or system board

AMERICAN MEGATRENDS

(AMI) BEEP CHART

BEEPS
ERROR
DESCRIPTION
1 Beep
Memory
timing error
2 Beeps
Mismatched
memory parity
3 Beeps
Memory
malfunction
4 Beeps
Motherboard
malfunction
5 Beeps
Bad
CPU
6 Beeps
Keyboard
controller error
7 Beeps
General
exception error
8 Beeps
Video
memory error

9 Beeps

Bad
ROM checksum
10 Beeps
CMOS
error
11 Beeps
Bad
cache RAM

AWARD BIOS BEEP CHART

BEEPS
ERROR
DESCRIPTION
1 Long
Memory
malfunction
1 Long 2 Short
Video
malfunction
1 Long 3 Short
Video/motherboard
malfunction
Continuous
Beeping
Memory or video malfunction
Other
Beeps
Bad system RAM
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