Hi guys, I recently built a computer, for the first time. Everything went fine until I went to install the operating system. I was installing vista, with a boot disc and halfway through it froze! Now im getting BOOTMGR is missing. I also tried to boot it from the disc, but it says DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER. It just keep on looping this, I also tried to use my XP disc, nothing works. Does anyone have any advice? Thanks.