System Locking Up & Crashing

[FloatingSheep]

Hi everyone, after a number of tries of attempting to figure out what my issue may be myself, I've almost given up.
After a certain amount of time, my pc would almost seem to.. stutter and lag, when moving the cursor it would just stutter around and if I clicked anything, the system would just freeze entirely and I would have to reboot.

I thought that I might have picked up a virus so I decided to wipe my system and put a brand new retail copy of Windows 7 Ultimate x64 on and all was running well until around a few days after, the same happened and since then my pc has been sitting there all alone.

I'd really appreciate if anyone could shed some light on what could be causing these lock ups.

Thanks in advance, Sam.

 

[Bombhead]

You didn't say what hardware you have, but check your temps. Sounds like something's getting too hot and just refusing to play.

 

[welshhotty2010]

how much memory have u got? 4-8gb is like the dogs bollocks espec if its ddr2

 

[FloatingSheep]

I'm running on 4GB at the minute, I'll be attempting to resit my CPU cooler later to see if that solves anything.