Www.mysearchresults.com

I have an HP TouchSmart 520 Desktop running Win8.1 with Norton 360 installed.  Recently I have noticed that when I open I.E. 11, instead of my usual home page something called www.mysearchresults.com opens instead.  It looks like Google.  It really does not seem to do anything wrong except displace my regular home page.  I have gone to Tools, Internet Options and reset to my usual home page but the next time I open I.E. mysearchresults is back again.  I have tried searching on Google for an answer to how to get rid of this intruder and there are many "answers" all of which seem very complicated and many do not seem to work according to those who have tried them.  I decided that since I have purchased and installed Norton 360, which I expected should have prevented this from infecting my machine, I would go to this community to see if anyone here has a solution to this situation.   Thanks for any help you may be able to provide,

DeaAL