Screen blackout or camera problems, Mac 10.9.5

League of Legends 6.4.16_02_22_17_11 Processor: 2.9GHz Intel Core i7 Memory: 8GB 1600MHz DDR3

Camera issue: Game starts fine and connects fine but camera needs to be manually controlled...with the spacebar. No other way to get the camera to move. Only moves when i hold the spacebar down. Requires disconnecting and reconnecting. has happened 3 times this past month

Screen Blackout After champ select, the screen went black. Could still hear the game (so i could tell that the game had begun and thet people were pinging...),[slayer-jinx-unamused]

nothing else. Had to switch off laptop completely, could not even ForceQuit.

Help!