I tried to repair my Windows XP. Everything went OK (except for a few missing files). Windows boot up to its log in screen. When I try to log onto one of my users, it asks me to activate Windows. I get an error in the program msfeedssync.exe "The instruction at 0x77d495c8 referenced memory at 0x00000048. The memory coud not be read."
Why did you need to repair, in the first place ?
Missing files ? Well, everything is not fine. What files ?
If you can't repair, then full install.