Serious problem occured after installing new processor.

[unwishable]

Hey guys,I bought myself a new AMD Phenom II x4 965 BE, I'm almost certain I've installed it correctly, but there is a serious problem. Whenever I play certain games (Dishonored, Starcraft 2: Heart of the Swarm) my computer will just restart itself. I can play other games on their highest graphical settings, but for some reasons these ones are going on. I'm not sure if it's the software, or if it's the hardware. Could this be a driver issue? If anyone could point me in the right direction, it'd be greatly appreciated!
Thanks guys!

 

[popatim]

Is the 965 on the list of supported cpu's for your motherbd?
Did you update the bios?