I need to reinstall Windows xp because I just put in a new mobo and cpu. My comp won't even boot into windows right now. I was told that this is because I switched out my mobo and need to reinstall windows. Problem is I can't find the disk. Is it possible to get another disk without buying a whole new copy of windows. I have the key. I've been searching all over microsofts website to no avail. If anyone knows where or how to do this please help (a link would be most appreciated ).