If you’re having problems and Apple TV still doesn’t respond after restarting, try resetting Apple TV to its factory settings. When you reset Apple TV, all data is erased, including your accounts and configuration.
You can also reset your Apple TV and update its software at the same time.
Open Settings Apple TV Support.
Open Settings on Apple TV.
Go to System > Reset, then select Reset and Update.
Selecting this option restores your Apple TV to factory settings, erases all settings and information, and updates to the latest tvOS version.