Hey! When I turn on my macbook, a folder with a flashing question mark pops up after a couple of minutes. The computer wont go any further than that. I have everything on this apple support page: http://support.apple.com/kb/TS1365 . I have also removed the hard drive and put it in again. I have tried booting from a mac os x install disc, but the computer refuses to boot from it (pressing c does nothing). The hard drive sometimes makes a clicking sound, so most probably there is something wrong with it, but I'd like to know if I can repair it using disk utility by booting from an install dvd. The install dvd is for my girlfriends macbook and is 10.5 eventhough my computer is 10.4 - dont know if that makes a difference.