Windows 7 display driver kernel version 268.something stop working and succesful recovered

[gamer88]

oke i have windows7 ultimate and i often get message display driver kernel stop working and succesful recovered...my display crash everytime when i got that message...i don't know why...
i upload newest drivers and nothing help if somebody know where is problem please tell me
i have nvidia geforce 8500 gt graphic card

 

[gamer88]

YouTube - Display driver stopped responding and had recovered. look and this video...this is my error...can i fix that???