Windows 7: VGA error or something else , computer stop immediately !!!

Hi guys , i usually got this while i was watching a movie by using window-media player classic then my computer stop working , i don't know exactly about this kind of problem , VGA or Ram or anything else , if you guys know it , please help me to figure out this , thank you very much !!!

Where was this file, where did it come from ?

Can u see the picture below my 1st post ? The screen shot comes from my desktop ..when i was watching the movie file (mkv ) by using WMP-classic , and then my computer stop working immediately , restart and ...sometimes it still the same like this ....

Yes I can see the picture, in trying to assist you I need to know where the file came from. For example, was it on you tube ? did you download it if so where from.
I'm trying to assess potential virus or even rootkit interference.
Just need more details.

Oh , i see , all of video file are the same , i downloaded from Vi , it's one of the biggest site in my country , also , i usually get the problem like this , using WMP-classic and it's appear a notice board " Unspecific Error " from WMP-classic => can not play any file by using WMP-classic or even VLC or WMP , vvv ...