You can restart your Apple TV from Settings, or by using your remote or unplugging it from power. Apple TV doesn't have a power button.

Settings
  • If you have an Apple TV 4K or Apple TV (4th generation), go to Settings > System > Restart.
  • If you have an Apple TV (3rd generation and earlier), go to Settings > General > Restart.
Remote
  • Siri Remote or Apple TV Remote:* Hold down theĀ  and Menu buttons. Let go when the light on your device flashes.
  • Apple Remote (aluminum or white): Hold down the Menu and Down buttons. Let go when the light on your device flashes.
Unplug Apple TV
If the Settings menu and your remote don't restart your device, unplug your Apple TV from power. Wait six seconds, then plug it back in.