Okay,
so let's give MS a chance.
Go to
this page and try the "Fix It for me" button (halfway down the page). Go there with Internet Explorer and click "run" after asked to save or run.
Then reboot and try again.
If that did not help, return to the MS page and read through the Methods 6 to 11 (well below the fixit for me button) which will have to be performed manually.
But try the automated tool first.