Hi, I have a laptop whch has been infected by WinpcAntivirus. After searching the internet, I tried manually removing various files (winav.exe etc) and Registry entries, and while they don't show up any more, the fact that I can't run or reinstall Malwarebytes (even after renaming the files) makes me think that this rubbish is still there. Any help would be gratefully appreciated! Thanks, John. Just noticed the 8 steps to do first - sorry - will do that and return when done - except perhaps the Malwarebytes step - it won't install or run OK Big problems apparently - with the 8 steps 1. Viruscan - 0 infections detected 2. CCleaner installed and used as requested 3. Viruscan disabled OK 4. Malwarebytes (Already installed but won't now) tried new download and install (including renaming files) won't work 5. Dowloaded Superantispyware (twice) - won't install) error message appears - SUPERAntiSpyWare Free Edition has encountered a problem and needs to close. We are sorry - etc. 6. Java is up to date 7 Hijackthis - won't install 8. Obviously logs not available. Hope you can still help!