hey last week my macbook crashed and it turns out its a hard disk failure, so i fixed it and restored it using time machine, after restoring it i restarted it then when the apple logo appears, a box saying to restart the computer by pressing the power button in a couple of messages!!!! i restart then the same thing!!!! what to do!! i have exams and projects i need my mac!! just a note: the mac was working properly after fixing the hard disk before restoring!