Undoing Font Hiding in Windows

If you are on Windows 7, and after performing some update, suddenly realise that you cannot see any of your non-Latin characters in your applications when you once could, try this out. Use Win+F2 and type "C:\Windows\Fonts" and press enter. Under "Font settings", make sure that the option "Hide fonts based on language settings" is unchecked. Then, reboot. Things should work okay after that, if not well, erm, you're on your own.