To reformat or not to reformat, that is the question.

My computer has some major issues, possibly virus related, we're trying to rule that out (i.e. I can't load McAffee, Adaware crashes when I run it, the keyboard layout that I installed is gone and I can't reinstall, can't do a windows update...). If DH can't find the cause, I'll probably be facing a reformat tomorrow. Lovely.