So twice now I have went to tab out of a game and it just showed a black screen, I had to turn it off via the power button. And just now, I went to launch the game Bully and I just got a black screen and nothing came up. The first time I can't remember what game it was, possibly Assassin's Creed IV and when it went black i waited about 30 seconds before turning it off. Specs are in my signature