MAY ONLY WORK ON GAMES MADE BY VALVE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
this fix might not work if your current digital 3d device (d3d device) is not supported by the game
games that i know this fix works on:
L4D2
Portal 2
CS:GO
follow the directions in video, then copy paste this in:
-dxlevel 80 - window
آی-ویدئو