1. Try cleaning the DVD drive lens with a lens cleaning disc.[br]
2. The DVD is damaged or otherwise protected, try another disc or play the DVD on another good player. [br]
3. Replace the optical drive. [br]
4. Go to the settings on your player and update the software.[br]
5. [https://www.winxdvd.com/resource/best-free-dvd-decrypter-software-review.htm|Decrypt the DVD] or repair it.