Hello, I have a 5 years old computer and I'm trying to install Windows 7. I have a problem booting from Windows 7 DVD disc while for my sister this disk is working fine. I have a DVD-drive but I can't boot DVD discs from there - only regular CDs. Maybe it's because an old Bios version or a old mother board that need an update? Anyone got a clue? I really want to check out Windows 7 and I'll appriciate your help. Thanks in advance.