Ok I will walk you through changing everything back to Google as the default.
I assume you are using the newest version of internet explorer if you are unsure about any of these steps reply and let me know.
First the home page click on the cog icon on the top right corner.
Then click on internet options.
Under home page delete everything that is listed there.
Then type in http://www.google.com into that space.
Under startup make sure homepage is selected.
Then click on apply and ok.
Next we will change the search back to Google instead of msn/bing.
Click on the cog icon again and this time click on manage add ons.
On the left click on search providers.
Then click on Google so it is highlighted.
At the bottom of that window with Google highlighted click on set as default.
Then put a check in the box that says search in the address bar.
Now close the window and restart internet explorer to test the changes.
You can get back to me by going to justanswer.com and click on my questions at the top of the page.
If this did not work, please come back and let me know by clicking on reply to expert so we can continue.If it did work, please don’t forget to leave a positive rating - it is greatly appreciated.