The Microsoft Windows Malicious Software Removal Tool can be used to detect and furthermore delete various viruses that might be running on your system. Some examples include: MSBlast (Blaster), Mydoom, Nachi, Sasser, Netsky, Bagle, Sdbot, Locksky, Wukill, Zotob, Atak, Torvil, Zlob, WinNT/F4IRootkit amongst 50 other viruses. The drawback is that this Microsoft Windows Malicious Software Removal Tool only detects viruses that may be actively running on your system. For example if you have a virus that is contained in a file that has not been run, this program would not detect it. However, for systems that are thought to be infected, this tool makes for a good start at detecting and removing the culprit.
This tool will work on Windows 7/8/10
Windows Malicious Software Removal Tool
You can download this tool direct from Microsoft HERE