There are only a few moving parts on a computer, so you can try to
isolate them.

1.  An out of balance cdrom reader.  Run your computer without
a cd in it and see if it still makes the noise.

2.  A bad fan bearing.  Stick a pencil in the power supply fan
and turn on the computer to see if it still makes the noise with
the fan stopped.  Of course, do   not run this too long.

3.  Disconnect the fan on the cpu.  Do not run too long.

4.  Disconnect the hard drive power and boot from floppy
or just go thru the bios.  Hard drives tend to make clicking
noises rather than buzzing noises.  Hard drives work harder
if they are fragmented.

5.  I suspect that the power supply has a transformer
which can buzz if the laminations become loose.

This is all I can think of.

Dean Kukral  [log in to unmask]

----- Original Message -----
From: "Ellis Heath" <[log in to unmask]>
Sent: Saturday, August 18, 2001 7:54 AM
Subject: [PCBUILD] Buzzing sound


>     Hello,
>
> I am writing about a noise that my computer just started making.  It's a
> buzzing sound that starts when the computer is turned on and continues
> throughout it being on.  It sounds like what the computer probably
normally
> sounds like, but just a lot louder.  So far (knock on wood), it does not
> seem to affect the computer's performance.
>
> I have an Intel Pentium III 450 Mhz with a Pentium III Processor and 128MB
> RAM.
>
> Thanks!
>
> Ellis Heath
> [log in to unmask]

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