The solution I found was to sign on to an Administrators account and then run the Media Creation Tool. As you stated, 'Run as administrator' does not work. I tried many of the methods you did and they all failed. I signed into an Administrators account to do something else, and later thought to search for a solution online. I could not remember which 'Something Happened' error I was getting, so I ran the tool there, and BOOM! it worked.