Help I have no idea what is wrong but my girlfriends ibook wont wake up. It will spin up the harddrive when I hit space and the screen will come on very dim but within about 2 seconds it puts its self back into sleep mode. I tried shutting it down by pressing command power and then restarting but as soon as its done booting up it goes back into sleep mode. I had it set to sleep after 3 min but last night I was doing home work and had a really long PDF I was using so I set it to never sleep while I was working. I never set it back I just told it to sleep manually. Could this be the problem? How do I fix it? Plz Help