Mr_Matilda

Thank you for the prompt replies. I shall do as you have suggested and will post up the results on here.

Firstly, I have absolutely no knowledge of PC's I own a Zoostorm PC with the following 'bits' in it; AMD A6-3670 APU with Radeon HD graphics 2.70 GHz RAM= 6 GB (5.48 GB usable) 64 bit operating system Windows 7 professional My problem is this; I can surf the net all day without issue, go on face book, write Emails, do anything in fact but when I log in to play World of Tanks I get about 2 minutes in to a game and the computer just switches off without warning. This will happen a few times and then the PC will be fine for a couple of hours and then shut down, with out warning, again. I have run several sweeps with my anti virus (Avast) and the Windows 7 operating system has been reinstalled. Can anyone shed some light on the problem?