So I play on my MacBook using BootCamp, and when I have it unplugged often times the display will go out. I can still hear the sounds and I assume everything else is goin' as normal. I can't exit the game however, and am totally screwed with my runes/masteries/spells. I have to hard shut-off my computer, because the display won't come back on. However, even when I hard shut-off my computer with ample time left before the game starts, it starts anyways, giving me a leave.