I was going to suggest malwarebytes as well.
When I had a problem a couple years ago, the I.T. guy at work that suggested malwarebytes said to run it (in safe mode) till you get at least 3 "clean" scans in a row.
Also, run it a couple more times after restarting your computer just to be sure it didn't miss something that was needing a restart to fire off.
It took me several scans before it got everything.