urukagina

I used to love Malwarebytes. I'd run a scan and get a hundred results, and after that my computer would run swimmingly. Over the last year, or maybe two years, though, Malwarebytes seems to have stopped working. I have not had a single scan return a single problem. My computer runs horribly, and there is no way I believe that nothing is there to be picked up. So why don't any of my anti-malware programs pick anything up? I've since downloaded three more programs - Avira, Panda, and CCleaner (the only program I have that does anything to better my computer's performance) - in addition to Malwarebytes, and yet still I never get a single virus, Trojan horse, or other piece of malware. Nothing whatsoever ever turns up in these scans, and it hasn't in maybe two years. I don't believe it. Something is wrong, either with these programs, or there is something blocking them from picking up the problems. Any ideas?

As the image shows, I keep getting this popup. Every website I goes on says "www.xxxxx.xxx [Google or Facebook or Wikipedia, etc.] says: Your computer is infected. You have to check it with antivirus." I always press the escape key. I've attempted three scans: Malwarebytes, which ALWAYS FINDS NOTHING WHATSOEVER (I used to really like Malwarebytes, but the last six months or so it has been totally useless); Panda Protection, which again found nothing, and then AdwCleaner, which found 100 objects. After removing them and restarting, I opened up Chrome and once again, this is happening.