Random Restarts

New AthlonXP 2100+ with a 320 watt power supply installed windows XP, have all current drivers.
MMMkay....
The computer randomly restarts for no reason I can tell. I have no idea why, any help would be greatly appriciated.
(by randomly i mean totally randomly)

 

welcome to T.S.G. tiger.
is the comp a built or bought machine?from a store?
if so im thinking that its still under warranty.
if not.........then how technically minded are you?do you know you way around the inside of the pc?
random re-starts are usually heat or memory related......if it happens after only a few minutes then probably the latter.
quite possibly a faulty memory stick......if you have more than one i would suggest taking one out and see if that cures your problem,if not take another out......and so on,till youve tried them all.
post back and let us know how it goes.

good luck

 

Thanks, actually I do know a bit.... Ive taken a stick of memory out and that stopped a lot of it but it still happens.
The CPU speed at idle is 52 degreez but I doubt its restarting because of heat because it occasionally works for hours and hours of CPU intensive work. Im leaning toward hard drive now, and trying to find a free utility to scan for physical problems.

Oh yah btw, its a custom machine with no warranty sadly

The hard drive is 3 years old, but worked mostly fine before i put it in this computer.

Again, thanks for your help.