There are many tools you can use, but it is going to be easier/quicker to backup your documents,pics and such and go ahead and reinstall windows. Also a good idea to scan your backed up files with malware bytes from a external drive before moving them back to your reinstalled system to make sure you dont bring the virus right back when you restore the files. (sometimes even in a best case scenario without viruses- windows needs to be reinstalled to restore a system to its original speedy self)

Personally i like to get windows installed, all updates done, a few basic programs like office, flash and java etc. Then make a image of it. So if you have issues like this it is easy to bring it back and you only have to reinstall whatever games,settings and other programs you are currently using.