Turn off your television.
Turn the Roku box around. Look for a recessed button marked "Reset" on either the back or the bottom of the player.
Unbend a paperclip and press it gently but firmly into the button. Take care not to press it for too long, since pressing the button for 15 seconds or longer will deactivate the player and restore it to the factory settings.
Wait several seconds before turning your television back on. The Roku digital video player will reboot if you've pressed the button properly. If pressing the "Reset" button fails to restart the Roku player, turn the TV off again. Disconnect the Roku box from the power outlet, then leave it unplugged for 30 seconds. Plug the Roku back on and wait for it to reboot.