Does anyone know any troubleshooting techniques for my Mustek MP70C Portable DVD!

Does anyone know any troubleshooting techniques for my Mustek MP70C Portable DVD Player; it says "wrong region

Every time I put a DVD into the DVD Player, it will start to read the disc; it will even identify it as a DVD for a second, then it will stop and display the message "Wrong Region"; what should I do to fix this problem?

2 months ago
It displays the message to all DVDs, even those that I have once played before in the player. It's not because of the region codes.

You have to move to another region, then it will work!!!