Hi I,m new here and hope some one can give me some help I've been having norton popping up on my telling me atapi.sys is infected and cannot fix. I ran recovery console from my xp disc and replaced the file. Now I am getting the same error but with nvatabus.sys. I'm not sure if there is a main file causing these to return or how many files are infected. I really don't want to reformat as I have a lot of programs I would have to reinstall. If anyone could help that would be great.