Tidy network werbsites popping up

I just started using a new WIN8 computer and have installed Norton 360 on it.  When using Internet Explorer, I keep getting unwanted websites popping up that appear to be coming from tidynetwork.com.  How do I get rid of this?  Often it puts popups in the middle of what I am viewing and I can't even read the website.  It also brings up websites in other tabs.

 

Any help would be appreciated.