I received a file from a friend's email address (which I was expecting!) and stupidly I chose to unzip it. Strange advertisements immediately appeared. I have stopped using the computer other than running antivirus checks which have cleaned out various bits.
Can I attach the zipped file for you to check? such that I can be sure to clean up correctly?
I can "hover" over the zipped file and chose "Inspect Element", which appears to list the file contents. I could copy and past the contents to this site if this is helpful?
Hope to hear from you soon