Video crashes while gaming

[SeanB]

Hello everyone, my computer crashes when I play games. The computer is still on, but the monitor says "no signal input"
any help would be appreciated, also I have attached a dxdiag file

 

[Tmagic650]

Have you tried updating you Nvidia 9600 drivers from this website:
http://www.nvidia.com/Download/index.aspx?lang=en-us