Personally after getting a virus I usually do a clean install. Time spent removing it, its just as quick to re-install your OS (10mins from USB)
The advantage of this, is a clean environment to see if you have other issues i.e. hardware, errors etc, Also your sure you are clean of viruses, malware etc.
I have an external hard drive with everything on it specifically for this purpose, drivers, programs etc and all my files are saved as I go, So if I do get anything nasty i know my files are backed up and safe!!
That's just the way I do it, its not a case of, if i get a virus but when i get a virus, sort of thing.
Hope this helps