that would be a problem.
Maybe when you tried a registry clean it did that.
Try downloading origin and click the exe. install it to where it is already installed, or it might let you repair installion.
When re installing the game it will ask you to redownload Titanfall2. If you already have the files, you STILL need as much EMPTY space as the size of the game, or else the download will not see your game files and error out and say not enough space. If this happens, move TITANFALL2 to another Hard drive, START the download, then when it gets to 1%, turn off origin, put the titanfall 2 files BACK to their original directory.