So far this has happened to me 3 times. First 2 times were back in the winter, and once about 5 minutes ago. I have Comodo Antivirus installed so it tells me when anything is trying to install or whatever. Usually i get file names that make absolutely no sense trying to install in my registry and i click block. Malwarebytes has been the most effective program to track down the virus, but so far not a whole lot of luck getting rid of it. The first time it happened I gave my computer to a friend who is a computer tech and the second and third time I did a System Restore.
No help really with screenshots or anything