Hello
Reboot your Chromecast device
Make sure your mobile device or tablet is connected to the same Wi-Fi as your Chromecast device.
Open the Google Home app .
Tap the icon of the Chromecast you want to reboot.
Tap Settings More settings Reboot.
Tap Reboot again to confirm your choice.
For more information, Visit us:
Chromcast Help | Chromecast.Com/Help