My pc open file automatically, then automatically shut down

[tukhor005]

My pc open file automatically, then automatically shut down
when I running my pc, it create pop up sound then open file automatically
then pc get shut down.
watching any video file, this create more problem.
when i scan all of my hard drives but any virus or virus activity didnt appear.
My antivirus up to date besides i tried many type of antivirus as well.
please give me some suggestion as soon as possible.
what should i do?

 

[gregrocker]

Boot into System Recovery Options to System Restore to a point before the problem began.

Establish a Clean Boot first and then work through the other Troubleshooting Steps for Windows 7, working in Safe Mode if necessary.

Keep us posted on your progress.