Hi everyone. Yesterday my friend needed to reformat his PC as it was failing to boot into Windows and saying that some system file had become corrupt. So he acquired a Windows XP Pro SP2 disc from somewhere and called me up to ask what he should do. I told him to change the 1st Boot Device in BIOS to CD-ROM and reboot with the Windows disc inserted and from then on to follow on-screen instructions to reformat. He later called me up again to say that after rebooting his screen either remained blank or froze in the BIOS screen. The disc does not seem to be detected / working. He claims that the disc is in perfect condition and also the his CD Drive is functioning properly. Any clues as to why this is happening? What should he try now? Thanks in advance.