Best thing to do is a system restore. You don't lose your data, and it takes you back to a previous date on your computer when you didn't have the malware. Then you are able to do a complete scan and elimination of viruses as your operating systems are not compromised.I contracted one about 10 days ago that kept downloading each time I tried to click off the fake MS site.
Shut the computer off and open in safe mode to do the system restore etc.