Hi, four days ago my macbook pro stopped working while I was doing internet. I had to shut it down but it never booted up again. I tried multiple times to format it with disk utility but it never worked utile at my .... 25th attempt, disk utility finaly detected it so i formated it but when I tried to install osx, the disk couldn't be detected just as before. I though that my HD was dead so i bought a new western digital scorpio blue 320 GB 5400 rpm. Now, it's the same story as before, my new hard drive is never recognize by the installation cd... I dont know what to do now. I'm exhausted to try the same things again and again. If anyone has a solution PLEASE !!! HELP ME. more infos: - The drive is turning (it has power) - With my first HD, i couldn't open the OSX partition but i could open the Windows partition. - With my new HD in, the installation cd of OSX AND windows cant detect the hard drive.