Does this effect shutting down your game trough control panel?
Sometimes when I alt-tab to answer my Skype chats and come back in-game, no picture is displayed.
I can hear the sounds, move around and do everything normally, except it doesn't display the picture.
It's just black and stays like that until I restart the game.
I don't do this much, so I wouldn't mind.
I'd just like to know whether to answer my Skype chats in the future without shutting down the game or not.