HELP ANYONE!!

[BEANZ]

Anyone out there please help!!!
I have installed the game BHD, as well as playing it a few times. So i know the thing works. But everytime a mission starts to load, half way through loading, the computer resets itself. Then when rebooted its says "it has recovered from a serious problem" but won't tell me what it is. I have all the system requirments so if anyone out there can help it would be very much appricated.