Hitman pro
Avast
Malwarebytes
SUPERAntiSpyware Pro
Hitman pro can source problems on your browser. Don't uninstall stuff with it.
CCleaner can be used to troubleshoot and, thus, find if effects on your system are a virus, trojan, et cet.
If you want to stay off of the grid and, thus, avoid doxers, get a proxy server subscription with high anonymity. This will relocate your IP to appear in a different location and, maybe, not even appear as your IP.