I hate viruses especially when they won't let you run your antivirus apps.  I find that to boot up in safe mode stops the viruses from stopping your antivirus software and you can remove them then.  Usually with me it takes a combo of RKill, Spybot Search and Destroy and Malwarebytes AntiMalware.  I dislike Norton and Macaffee and run the free AVG antivirus.  They are far too intrusive on my system and really slow my computer down.  Sometimes I can clean a drive by installing it on another machine as a storage drive in slave mode so the operating system does not initialize and then running my antivirus apps on it.
Superantispyware only works on spyware, not malware, trojans, or viruses.

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