So I used to be able to play a video or steam something from the internet while playing a fullscreen game like warcraft 3 or some first person shooter. My problem is that now when I play a movie then try to launch a game the video player goes black when either in fullscreen or just windowed, this also applies to iTunes. I have the latest drivers for my GTX 460 and I have tried using windows media player and vlc media player. All answers appreciated.