Adding on to what Enoki said above, by uninstalling FH, did you just delete the desktop icon? If that's all you did, then that's probably why the game's still not working for you. Delete everything you see that's FH-related, whether it be the desktop icon, the game folder, or even just random files you have laying around. There has to be absolutely no trace left of FH before you reinstall the game. One you're completely sure that you've done this, then redownload