1. Press Windows+R.
2. Type regedit.exe.
3. Accept the administrator prompt.
4. In the search bar, copy: Computer\HKEY_CURRENT_USER\SOFTWARE\LJ LephemStar or navigate to it.
5. Do not click on 'Keys' or resembling to a folder.
6. Delete everything with Screenmanager.
7. You're done! Open the game, and everything should be alright.