I am Caroline, a technician. I am here to help you with device installation issues. If you use Roku and often face a Roku remote not working, then here’s the help for you: put the fresh batteries in and then try to run it. If it fails, perform a hard reset. Unplug Roku and remove batteries, and then wait. Re-plug and perform it now. Hold the pairing button until you see a light and a message flash. Get more on it through the given link.