So I did the dumbest thing i've ever done in my life. I slammed my hand into my MacBook Pro, and now it wont boot past the Grey Screen. It still has the OK chime on startup though. Yes. Im a moron. I knew right away that its a hard drive problem, so I booted using my Lion DVD and ran disk utility and checked my hard drive. Disk utility reports the disk as being okay, but it still wont go past the grey screen. Next i tried re-installing Mac OS Lion, and the installer reported success, but now when i boot my macbook it makes the OK chime but all i get is a plain white screen with no apple logo or that spinning wheel thing. Im going to try erasing and re-installing from scratch next ( I have a time machine backup), but i would like anyone with more experiences opinion. I have a 3 year warranty with future shop, but I would rather not bring it in since they have to send it to apple and I wont have my computer for 3 weeks.