Exit the Netflix movie if possible. You will need to use the gaming system's or compatible player's remote control to go back to the main Netflix screen.
Turn off the Netflix compatible device. Give it a few moments before powering it on again.
Launch Netflix on the device or computer. Go to the movie you were previously watching. Try to play the movie again from its current location by selecting "Resume." If the movie starts, then you can restart it from the movie's title page.
Quit the movie, and then select "Play from Beginning" on the title's detail screen. The movie should begin playing from the beginning.