Frequent crashing for no apparent reason, any suggestions?

[peterduk]

Hi people,
I'm running an AMD phenom quad on windows seven 64bit, and for some reason whenever I run a game and sometimes on certain websites my mouse will stop working and ill get a wierd but loud feedback kind of noise from the speakers. I've tried everything I can think of, updated all my drivers, clean reboot, re built my computer, everything. It seems to happen at random, all I can say is that it happens everytime I try to play battlefield bad company 2.
I'll be on here all day so any advice will be very much appreciated
Also apologies if this is in the wrong forum

 

[Tmagic650]

This could be a power supply issue. What is the make and model and wattage rating?

 

[peterduk]

Hey, thanks for the reply. I'm not sure what make it is, im pretty sure its a generic 400w one. I'm running a NVIDIA 9800gt if that's any help to you. I'm in work at the moment so I cant give any concrete information until tomorrow. If there's anything else you need to know ill do my best to help

 

[Tmagic650]

Okay, I really think you should try another power supply when you can...

 

[peterduk]

Ok im at home now, just tried to fit a PSU from a HP desktop and the connections didnt fit on the motherboard which means I have to buy a new one. Can anyone suggest a suitable PSU?. Ive got a ASrock K10N78, the link to the site is -

asrock.com/mb/overview.asp?Model=K10N78D

Thanks for any help