Troubleshoot “Low power” and “g.co/cast/power” screens

The warning 'Low power' or the link 'g.co/cast/power' appears on your TV screen when your Chromecast with Google TV or Google TV Streamer (4K) doesn’t have enough power to function properly. To troubleshoot, follow the steps below:

1. Check that your Chromecast with Google TV or Google TV Streamer is plugged into the power adaptor that came with it. If it’s plugged into your TV’s USB port or a different adaptor, it might not be getting enough power. If a replacement is needed, the recommended adaptor spec is 5 V/1.5 A.
2. Check that the power adaptor is plugged into a reliable wall socket. 
3. Check that the cable also came with the Google streaming device. If you use a different cable, it might not be supported. Using a different cable may also cause the device to get stuck in a reboot loop.
4. Check that the cable is completely plugged into both the adaptor and the streaming device.
5. Reconnect the cable into both the adaptor and the streaming device: 
   1. Unplug the cable from the streaming device and the adaptor  wait five seconds.
   2. Plug the cable into the adaptor first  plug it into the streaming device.   
6. Check that no USB Type-C hubs or switches are between the streaming device and power adaptor. They can affect the power capability or power delivery compatibility.