Get a USB Drive or external HDD, save all your important things like passwords, bookmarks, sites, text files and etc.. Anything that is important to you and format the drive..
It's pointless to bother removing malware.. Just format, it's the easiest way, but also the most annoying one if you have a slow internet to download all the games and the rest..
Before you format, I suggest you check your desktop and programs that you have installed, make a list of what you will need on a fresh windows, most importantly, if the virus is just ad based, then you shouldn't be scared to download drivers beforehand so it will be ready after the format.
This will guarantee a virus free system.