I am using a Intel computer stick plugged directly into the HDMI on the TV. Running Windows 10. I'm unable to setup my computer to "auto-lock". In the power settings, I set it to turn the display off after 3 hours. In the screen saver settings, I've ticked the box to "require password on resume". Neither of these options are working currently. The monitor does not go into screen saver mode, nor will it turn off after 3 hours. Yes, I have a password on my account which is entered upon every restart.
Research shows that I need to delete a couple registry keys, but neither of them currently exist. Previewing of the screen saver functions properly. Other than that, I have been unable to find a solution.