About two moths ago I installed Win XP with BootCamp, and have been using it since then due to school projects. Now I wanted to start Mac OS X Leopard, but when it comes to the apple and the loading circle, it's about the end. I never get into Mac OS X, it is just loading forever (I've had it like that for hours before i gave up). I do not need to have Win XP, but i would like to get into OS X. How can I fix this problem, or if it's not fixable, restore the computer to factory status?