Redirect from Facebook to Yahoo webpage

I don't know what's happened, but whenever I try to go to facebook it keeps coming up with a Yahoo page that says that the page is not available (a couple of times it brought up a Bing page).  I've run a full system Norton antivirus scan (with all my definitions/etc up to date).  A full system Malwarebytes scan and a full system can using TDSSKiller (backdoor rootweb scanner).  It's not flagged anything unusual - everything's fine.  This has been going on for two days.  I can log in fine thru my laptop, but not this pc.  Can someone please help?  Thanks! :smileyhappy:

 

p.s.  I am using Internet Explorer 9 and NIS 18.6.0.29

 

This seems to only happen when trying to get to Facebook, no other sites.