Try Malwarebytes Anti-Malware. This is what I use to clean friends computers and my work computers.
https://www.malwarebytes.org/mbam.php
After that do an online scan from Trend Micro. They always seem to find 1 or 2 small things that Malwarebytes can't find.
https://housecall.trendmicro.com/
Yep Malwarebytes FTW!!
Excellent program!