It happened to me more than once to fall asleep at night leaving my new macbook ON (working with battery). The macbook goes to sleep after a bit but in the morning there's no way to make it "wake up" if not plugging it again. The battery is absoluty not dead because when I plug it in it says "95%" or similar. But no key seems to wake it up, as i said, unless i plug the macbook again. Is there something I'm not doing right? Thanks for any advice...!