Computer freeze during BF2

[computeruser85]

When ever i play Battlefield 2 for more than about 20 mins the computer freezes and i have to restart my PC
I have a P4 2.8Ghz - 4 fans - Raedeon 9600 GPU - Standard PSU

Why would it be doing this

 

[WinDoWsMoNoPoLy]

Memory, overheating, drivers, lots of things. Have you recently done any changes to your computers configuration?

 

[computeruser85]

Thanks for the reply
Yeah ive found the problem - heat issues
The fan on the GPU isnt running properly
Ill sort it - thanks again