Hello,

I have an Asus N55SF, and i have a problem with the intel graphic, the screen always gets black (with some liltle white dots on the left side of the screen), and when i gently hit the pc sometimes the screen gets back to normal.
Now when i open a game or anything that uses the nVidia graphic cards, this problem never happens, or when i plug the laptop to an external monitor, so how can i turn off or disable this intel graphic. Cause hitting ur pc to restore the picture is really embarrassing specially infornt of other people

Thank you.