Asus P5q-e How Many Watts My Pc Always Restart Everytime I Play Games(ex. Borderlands,Dragon Age) In High Res.?

My pc always restart everytime i play games(ex. Borderlands,Dragon age) in high res.? - asus p5q-e how many watts

I have read many forums how to solve this problem. Some have suggested PC format. This he did, still the same problem occurred.It can be material, because I did not notice anything weird (maybe I'm wrong ^ ^ .... still a noob). I bought a new Asus Matrix GTX 285 graphics card. Also installed Nvidia drivers 191.07 and 195.62 (I think ^ ^) just ruined my graphics card. Any suggestion or idea to discuss what the. I'm Not Driving Me Crazy !!!!! ideas.It

Here are my PC specifications:
Processor: Intel Q9550
RAM: 4095Mb (1066-555 OCZ Platinum XTC K2)
OS: Vista Ultimate 64-bit
GPU: Asus GTX 285 matrix
Hard Drive: 600 GB
MOBO: Asus P5Q-E
PSU: Coolmaster Real Power M 1000 (1000W)