Hi. There's an issue with my sister's Macbook Air (2012 model I think - it's the one with the HD4000 graphics). She was playing The Sims and then suddenly the computer froze. It would just display a freeze frame of the game. At this point the computer was pretty much unresponsive. We couldn't minimize the game and pressing the Power button did nothing (we could however adjust the display lighting, so it wasn't totally unresponsive). We unplugged the charger and let the battery drain. When the battery had fully drained we plugged in the charger. It was indicated on the charger that it was infact charging (the orange light). It was also able to fully charge (indicated by the green light). However at this point the computer is totally unresponsive. Absolutely nothing happens if you press or press and hold the power button. The display is just black and it makes no sounds. Anyone who has a clue whether there's an easy fix or if it has to be sent in for repair?