Unplug the Roku TV power cord from the wall outlet
Wait 10–20 seconds
Plug the power cord back in
Turn on the TV using the Roku remote or the TV power button
If it doesn’t restart, press and hold the TV power button for 10–15 seconds (or until the Roku logo appears), then release
If the TV still won’t restart, press the Home button 5 times, then press Up, then Rewind, then Fast Forward, then Rewind, then Fast Forward (on the remote)
If prompted, select Restart or System Restart