damn just installed that sp1 thing, and it asked me about replacing some system file b4 installing i chose not to, now after i installed sp1 and booted my screen goes blank and then computer just restarts after about 10 sec flashing some blue windows with something there, too fast too see what is there. i think my problem is that i have costum logon screen, the one that comes b4 login box. now i think to fix it i have to replace the file corresponding to it with original file, but the problem is that i cant get to it. i have tryed all boot up options from F8 key , i end up with restart everytime. now i am in windows ME. but i still cant acess my XP partition cuz it's in ntfs. what can i do in this situation? right now my only idea is to take out HD and take it to a friend with ntfs system attach it there and replace files. format is not going to be an option here either. can i do anything to fix this thing with out taking evrything apart?