Simple fix for playing Witch King on Windows 10. When you boot up the game and will just freeze and stop responding if this you then hang on tight.
Downdload This. and save it to your desktop like so…
This will give some games files and do the following:
Navigate to app data like so replacing the highlighted username with your own.
As the image suggests copy the games files folder into your app data folder. You may need to allow hidden folder in window 10 (google this!).
Should be good as gold.