I have an ASUS notebook computer running Windows 8.1. I've been having a lot of trouble with malware (tons of pop-ups interfering with internet/browser use), including something called cwu.thunderyswinger.com. A google search said GridinSoft Anti-malware would take care of the problem. I installed and ran GridinSoft and it located 51 "bad" files and it recommended deleting some and moving others to quarantine (I don't know what that means). I told it to go ahead and "fix now" and it went through and did its thing with 25 of the files, then it asked me to pay to register for their service before it would finish "fixing". I tried to pay, but I got an error message that said "There is no internet connection" Now, I can't connect to the internet, even though my computer says my wifi is connected. I get the same message whether I'm using Google Chrome (my main browser) or Explorer. Obviously, I'm sending this note from another computer. Please help! I need to get the malware off my computer (suggestions of which anti-malware I should use would be greatly appreciated). But, first, I need to be able to connect to the internet! Thanks for any help you can give.