I opened a game named Little Fighters, and then tried to open a video either .mkv, .avi or .wmv, and then my PC suddenly turned into Blue Screen of Death.
The video couldn't be showned properly in VLC either, as long as the game was still left unclosed.
The game is freely available from Download.com.
You just have to start the game and leave it alone,
then open any video in VLC.
You should be able to see the problem immediately afterwards.
However, the problem no longer persists if I close the game before I open a video using VLC.