Spyware Doctor from Google Pack

The program asks no permission, so the only thing which can be done to prevent such parasites is getting a reputable anti-spyware installed. I personally use Spyware Doctor from Google Pack, ... I was able to remove the security tool virus using malwarebytes, however, there appears to be something else still on the computer that prevents the opening of downloaded programs such as anti-virus software and I have NO idea how to get rid of this. ...