This morning when I turned it on after leaving it charging for like 5 hours it played the startup sound and went to the apple logo white screen and it stood there forever, I could move the mouse though. So I turned it off and it sounded like when it turns on that you can hear something move inside. Turned it on for at least three more times and it kept doing the same thing. I let it be for a while then turned it off, when I turned it on it made a harsh sound then it finally booted properly. I recently did a Windows 7 partition, does that have anything to do? I got scared for a moment there.