Computer restarts when...

Hey there,

I'm not sure if this is a software or hardware problem, but I'd assume software because this problem occured before I got my computer formatted, and is now formatted and everything works fine except for this little problem.

It seems everytime I use a torrent program like Azureus or Bitcomet, my computer will eventually restart itself without any indication as to why. I don't know when it will do it, it's usually quite random. It could work for a couple of hours, and then restart itself, or be open for 5 minutes and do that.

I have no idea why my computer doesn't like using either of those torrent programs. I know this is what is causing my computer to restart, because if I do not use those programs everything else is running smoothly.

I'd appreciate it any of you could help me fix this. Thanks for your time. ^^

 

my comp does the same...only not with torrent programms, it does it with windows media player, everytime i try to drag music in to the list my computer will just power down instantly....