This CostMin is a very annoying adware thing. I have deleted the extension numerous times. Each time, I can use Chrome without trouble as long as I keep it open. But when I close it and reopen -- there is the CostMin extension AGAIN.
I am using Windows 8.1. I have run Windows Defender, Malware Bytes, Super Anti-Spyware, AdwCleaner, and FreeFixer. None of those have helped. I have looked at all my programs to see if I saw anything that looked suspicious and deleted a few things. I deleted a few things when I ran FreeFixer.
Does anyone have any ideas?