really... Just trying to help with what I know, hope it's not
too technical. I'm a Linux guy but use windows as well, there are
other methods but probably won't help you if too much for you

I don't do full virus scan for myself(I never had virus
problem), but when I do it for someone else, I always scan from
another windows - a lot less complications, you won't see weird
stuff after that. Try it.. keep posting till you solve your
problem, NEVER re-format.