Just to let you know I have taken the gtx260 out, swapped the ocz psu for the original psu, tried playing Arkum Asylum again and still get the exact same bsod, this could be down to the fact that the onboard graphics cant handle a game like that even on the lowest settings but I am at a loss as to what is causing the problem, anyway thanks for all your help with this issue I will try some other sites to see if they can shed some light on this problem thanks again for all your help.