I have an Asus lap top that came with vista on it, and wanted to get Windows 7. So i used the student discount through microsoft to get windows 7 professional. While waiting for the hard copy in the mail, a friend gave me a copy of a pirated windows 7 to use in the mean time. Its been a month and im still waiting for the disc so i decided to use the internet download. Everytime i try and install it, i get in I/O error. Is this because i have a fake copy?