In order to remove System Doctor 2014
virus you first of all need to stop its process. The name of its process is a random name, so I can't tell you exactly how it is called. If you successfully stop the process of System Doctor 2014 virus, then you will be able to remove it with any security software you like or have installed already.
You can stop the process of System Doctor virus using the utility called ruskill.exe. This is the program that helps stop the process of virus by window title. You may read more about how to download and use this utility here - http://www.system-tips.net/remove-system-doctor-2014-fake-antivirus/
And here is the video guide explaining how to use ruskill.exe application - http://www.youtube.com/watch?v=hwiG613TqBI