My mid 2007 macbook pro thinks its asleep when the cover is open but awake when the cover is closed. I was encoding some media files to dvd when a friend accidentally unplugged the power source. The battery drained and I did not notice until it was fully drained. I then went to plug it in and turn it back on and it refused to, I then closed the cover and it awoke as if everything was normal. I opened the cover and I saw it exactly as it should but then the screen went black as if it had gone to sleep. Help, i'd rather not have to purchase a new macbook.