Cannot install game properly, but cannot remove all files either
I tried installing the game, and it seemed to go well. Then I went to play the sims, and the initial sims launcher booted. 3/4 of the way through the update for it, it said that it could not install a file that was already there. I told it to ignore this, and it continued and appeared to be successful. However, once I tried to launch the sims again, the it would give the errormessage that thesims3launcher has stopped working.
I attempted to uninstall it, but the uninstaller could not access a file (C:\Program Files (x86)\Origin Games\The Sims 3\Game\Bin\TSLHost.dll). I am logged in as an administrator, and the only account here. I cannot manually delete this file. I cannot move this file. I cannot modify this file. And when I go to security to change ownership of it to fix this, it says that "it cannot display information about the current owner" and it can not change ownership to me. So I'm stuck with this file and no way to remove it or successfully reinstall the game.