Hello, new to the forums but hoping for some assistance. I have just bought a MacBook Pro A1278 which has only Vista installed on it. I am trying to remove it completely and install Mac OSX v10.5 Retail. I'm having dramas. Firstly, if I boot and hold the options key, the HDD image appears with Vista under it, and the CD image appears with OSX under it, but once I hover my mouse (both keypad and external) over the CD image, the computer freezes. You can't click on the OSX but you can click on the Vista image, and it will load. I've also tried holding C from boot however it doesn't autorun the CD it takes me into a program like DOS but is called GRUB, I have tried to run OSX through there but it also fails. I phoned apple who tried a few things with no luck, I have booted holding option, control, P,R, which didn't help. Is there any way I can format the hard drive and just instal OSX fresh? I don't want/need a dual boot system and despise Vista. Any help would be appreciated.