Re: Free registry cleaner and/or spyware removal?
I personally use Malwarebytes Anti-Malware and Junk Removal Tool and restart if necessary.
Then I check again with Adwcleaner.
Finally I check again with Roguekiller.
Registry cleaners are something to be wary of, sometimes they can brick your PC just as well as fix it.
And always use common sense before removing potential threats, google each one of them if you're unsure about something being bad, even the "best" cleaners can fuck up and ask you to remove something that is critical to your PCs function.
If all else fails, do a clean OS reinstall, that way you're 100% sure to not have anything left on it after formatting, unless you only have one drive for both your system files and personal files, in which case I'd suggest getting a new drive to put all your shit on.