You should restore to a restore point from before the problem occurred.
A real source of problems is Avast, Comodo firewall, MalwareBytes, and SuperAntispyware ALL running on your computer
You do not need a single one of them.
All you need is MSE, Microsoft Security Essentials--link to MSE in my signature.
First uninstall all of those, then immediately download and install MSE.
MSE is the one, the only internet security software that I use, the only one I install, the only one I recommend.
I'm in good company--such names as Fred Langa and Paul Thurott give this advice and use only MSE on all of their computers.
If you have any doubts, then please read this: Understanding Microsoft Anti-Malware Software 2012 ~ Security Garden