I had had 2 operating system on 2 hard drives (XP and Vista) I took vista off and replaced it with media center. I could boot both xp and media center but the vista boot screen always shows up and would have to go into "ealier versions of windows" and choose my OS from there. I read somewhere to get rid of the vista boot screen I should delete "bootmgr" file and "boot" folder from the root of C: I did this and now nothing works. It tries to boot into vista boot screen but it says files are missing and resets. What do I do?