Did you check Control Panel > Sounds and Audio Devices > Audio > Sound Playback > Advanced ? You can set the speakers to all possible "Mono" choices you might have. Then set the balance to 100% left. That should work.
Did you check Control Panel > Sounds and Audio Devices > Audio > Sound Playback > Advanced ? You can set the speakers to all possible "Mono" choices you might have. Then set the balance to 100% left. That should work.