Hi-

As usual, the week my pc goes out of warranty, something happens!

A few times during the use of my pc, I get some kind of electronic "buzzing" noises.
They remind me of some kind of s.o.s. noises.  They are coming from the pc itself, not the speakers.

The pc is clean, and I have checked for loose wires and all that, and found nothing.
Ive even run all the "cleaning" programs I have, and still, it makes the noises.

It even makes these noises when turned off.  Ive gotten woken up in the middle of the night with this buzzing sound.

It doesnt make the noise all the time, just a few times EVERY now and then.

Any ideas what it is, or what it could be?

My pc is a Compaq Presario, 3200, 512mb, 80gb with AMD processor.

Thanks,
KennethDid you try unplugging the computer?

(Leave it unplugged, and see if it makes these noises)

Possible solutions/causes:
BIOS data is not turning off something...
Bad PSU

Until this issue is resolved, I dont recommend you leave your computer plugged in when you leave your home (just as a precaution, since it could be a serious issue that is causing it to do this while it is off)

Are you sure its not the monitor or a printer? What do "s.o.s. noises" sound like?

Personally I always switch off my PC at the wall when I go to bed or leave the house for a few days. British wall outlets often have switches. (My household fire insurance stipulates that I do this).

I suspect the PSU. Look INSIDE the CASE when the noise is occurring and see if there is any physical movement.Not to sound too stupid here....but whats a PSU?

And I have unplugged the pc for a day before, and it still made the noise.
I will START unplugging it when I go to work now.

The noises are coming from the front bottom area of the pc, but I cant find out exactly where they are coming from, because they are so random, by the time I get to the pc, the noise has stopped.

Thanks for the info.A PSU is a Power Supply Unit
( See one here: http://www.dansdata.com/images/sfpsu/psu500.jpg )

Are you saying that the noise still occurred while the computer was unplugged?

If it is, then I hate to make you sound crazy: But its something else thats making that noise. A Desktop computers hardly has enough power when unplugged to make even a beep. It can only keep the contents of the CMOS.

Could you open the computer, and take a look at what is in the front bottom of the PC?
Perhaps a fan is causing the noise? I asked before, what are S.O.S. noises (whatever they are!) supposed to sound like? We have not seen a proper description of these sounds. Are they loud or quiet? Do they sound like a bee? Do they sound like voices? Do they sound like music? Do they sound like MORSE code? Are they beeps?

If it still does it when the computer is unplugged and moved to another position, maybe there's an ants wasp's nest inside?

I can think of some explanations...

if the sounds come when the PC is unplugged then the first two are possible I guess

insects
mice
case vibration from other equipment
computer owner is crazy
radio pickup
evil spirits





Quote

I have unplugged the pc for a day before, and it still made the noise.