So I have this Sony Vaio from a friend. he said he got the dirty decrypter virus and tried to remove it herself. I have ran a bunch of scans on it and removed a few things. what I am left with now is a black screen with just the mouse pointer which can be moved around but nothing else works or at least I cannot see it. no version of safe mode works either. I can boot in to it with a boot disc though. Anyone have any tricks up their sleeves before I rebuild it?