You have mentioned verifying the game, so I assume you have a Steam copy.
Have you played Amnesia successfully before? What have you done to the game files since? Have you installed or tried to install any full conversion modifications or have tried to make your own?
Could you please post the contents of the main_init.cfg file? Right click Amnesia in your Steam Library, select the Properties option, then under the Local Files tab, select the "Browse Local Files" option. In the "config" folder, you'll find the "main_init.cfg" file.
Could you also post the main_settings.cfg file, provided it exists? Its directory can be found via Problem X of the Troubleshooting Guide:
https://www.frictionalgames.com/forum/thread-3754.html