Windows XP cannot inject???[SOLVED]

I recently reinstalled windows XP because of virus and then all my hacks stopped working. Faith Injector is still set up as before, and I tried re loading the files into injector multiple times. Every time I try to inject the injector would say file injected, and then the usual pop up wouldn't show, and the game starts as if normal after a bit of lag.
I have admin, I tried turning off Norton, I tried different injectors, all the same.
Need help.