How to Interpret Computer Beep Codes
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When your computer makes those funny beeping sounds via the system speaker, it’s not doing it to hear itself talk. The computer is trying to tell you something is wrong. How do you interpret those beeps?
- No Beeps Short, No power, Bad CPU/MB, Loose Peripherals
- One Beep Everything is normal and Computer POSTed fine
- Two Beeps POST/CMOS Error
- One Long Beep, One Short Beep Motherboard Problem
- One Long Beep, Two Short Beeps Video Problem
- One Long Beep, Three Short Beeps Video Problem
- Three Long Beeps Keyboard Error
- Repeated Long Beeps Memory Error
- Continuous Hi-Lo Beeps CPU Overheating

7 Comments
Guy Stran
July 29th, 2008
at 12:22am
Thanks a lot for this Chris. I had an old, well, really old Sony Vaio that I have been trying to get up and running again for some time now. It was the first computer that I ever bought and I’m interisted as to what is still on the Hard Drive. When I would start it up it would start beeping and I didn’t know what the hell it ment. Now, with the information you’ve provided maby I can finally get it operational again! Thanks a ton Chris!
-Guy
Aryeh Goretsky
July 29th, 2008
at 1:44am
Hello,
I believe there can be some variation in motherboard beep codes, so it might be a good idea to double-check with the computer or motherboard manufacturer, just in case the beep codes for a particular motherboard are different than those listed.
Regards,
Aryeh Goretsky
bizbad@live.com
July 30th, 2008
at 10:50pm
Whenever my dad turns on his computer he gets those H-Lo beeps. He resets his computer and everything is fine until he shuts down and turns on his computer a few hours later.
So why would it be doing that? It’s been happening since he reinstalled XP a few years ago.
Barry Karas
August 1st, 2008
at 5:21am
What does ‘no beeps’ sound like?
Barry Karas
August 1st, 2008
at 5:23am
What does no beeps sound like?
Paul
October 4th, 2008
at 12:25pm
If you just want to see what’s on the hard drive, there’s no point in reviving the computer. Pull the hard drive and connect it with USB to IDE/SATA cable and browse to your heart’s content.
lens
January 19th, 2009
at 8:59pm
PLz help me …….
Improper shutdown hqappen to my system after working for an hour or 30 minutes.
if we retart the system again , windows loaded after two beeps sound.