apple tv not responding

You are seeing the Conference Room Display screen. It has an On|Off setting in Settings﹥AirPlay. It probably isn’t what you want active in a home situation on regular days, where you want full use of the device as the primary user. Manage AirPlay settings on your Apple TV - Apple Support

• Normally, press Menu to get out of this screen.

If Menu doesn’t respond, then you may need to pair the remote (again). If your Apple TV remote isn’t working - Apple Support

Please unplug the Apple TV from power for a couple of minutes and then re -plug it in and test. Also, please ensure your Siri remote is charged.