Solution 1: Restart the device

1. Unplug the power cord and the network cable. The screen should turn off after 10 seconds.
2. Wait two minutes.
3. Plug the power cord directly back into a wall outlet. Check that the wall outlet is functioning correctly.
4. Quickly tap and release the power button to turn the device back on.
5. Once the device turns back on, plug the network cable back in.
6. Wait one minute, then try the network connection again.