Download Linux put on flash disk run boot up with flash disk delete any file you want. Restart pc back into windows see how windows bitch and moans. Kktnx baai
That or Ubuntu, however that won't allow you to access the registry keys to delete them, sometimes these critters (If it is a virus/worm) duplicates it's self to various locations on the hard drive and use one registry key and generally deleting that key solves the issues and you can track the multiple names they hide themselves under.
All it takes is ONE BAD DAY tO ReDuCe the SaNesT Man Alive To LuNaCy. That's How Far The World Is From Where I am. JUST ONE BAD DAY