[Herts] Irritating Alarm

[David Honour]

I have an alarm (on the motherboard, or at least voiced by it) that goes
off when my system is under load (and it doesn't take much, bzflag will
trigger it).

Having looked into lmsensors (which i'm not sure if i can
trust the output of), it shows no overheat or power shortage.

It also doesn't appear in dmesg, so I think it is likely to be
hardware, but, i cannot diagnose it.

While the alarm is going off it appears to run as normal, hovever, it
has been doing this on a slightly more than daily basis for some time
now and I am becoming increasingly worried by it (and it's really loud).

Sometimes it will stop if you close all running programs (just as if
you were going to shut down). Sometimes you have to shut it down to
shut it up.

System:
CPU: x2-3800 <- stock cooler
Ram: 2Gb of cheap stuff
Mobo: Abit KN8-SLI
Graphics: 2x6600Gt SLI
Audio: M-Audio Audiophile 2496
HDD: Western Digital (250gb) <- I am worried about this anyway
Optical: one dvdrw and a dvdr <- not nessacarily active when goes off
+loads of case fans

Any ideas, thanks
David

p.s. I think I will bring it to the next meeting so if there's anything
in terms of hardware tests that you think might help, then might be the
time.