The following tools will safely scan your computer for malware/viruses and remove them.

ESET Online Scanner
https://www.eset.com/us/online-scanner/ 

F-Secure Online Scanner
https://www.f-secure.com/en/web/home_global/online-scanner

McAfee Stinger
http://www.mcafee.com/us/downloads/free-tools/index.aspx

Norton Power Eraser
https://norton.com/npe

Microsoft Safety Scanner
https://www.microsoft.com/security/scanner/en-us/default.aspx

Microsoft Windows Defender Offline
https://support.microsoft.com/en-us/help/17466/windows-defender-offline-help-protect-my-pc