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 adapter that came with it. If it’s plugged into your TV’s USB port or a different adapter, it might not be getting enough power. If a replacement is needed, the recommended adapter spec is 5V/1.5A.
2. Check that the power adapter is plugged into a reliable wall outlet. 
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 adapter and the streaming device.
5. Reconnect the cable into both the adapter and the streaming device: 
   1. Unplug the cable from the streaming device and the adapter  wait 5 seconds.
   2. Plug the cable into the adapter first  plug it into the streaming device.   
6. Check that no USB Type-C hubs or switches are between the streaming device and power adapter. They can affect the power capability or power delivery compatibility.