Ads in Chrome and Steam

Vadendil

Honorable
Aug 18, 2012
4
0
10,510
So I have this problem where ads pop up in Chrome and Steam. I'm using AdBlocker for Chrome which makes it obvious it's a virus. Already ran virus scans and adwcleaner, but the problem persists, as you can see the image of an ad in steam.
http://imgur.com/lFiMdDI
I've had this problem before but that time running adwcleaner and deleting some file manually made the ads disappear. Not this time though.
Any suggestions are welcome since I really don't know what else to do.
 

Vadendil

Honorable
Aug 18, 2012
4
0
10,510


Trying to avoid this but it looks more and more like it's the only way
 

Vadendil

Honorable
Aug 18, 2012
4
0
10,510


I have an antivirus (SYmantec endpoint protection) and already unistalled chrome...but as I said the ads pop up even in the steam browser