Malware

My pc has had malware for a while now and it's getting really annoying with all the ads, and I need some recommended antivirus programs.

I think I got malware from those damn Russian mods a while back...

My mcafee program says unwanted site named genericpup.y and when I click remove it doesn't remove and mcafee just keeps on popping up and saying to remove it, but it won't.