In reply to Boulderdash86:
There is only so many times a drive can be swapped from one region to another, 3 usually. Sounds like its 'bricked' <locked to R1>
Options are
1. try and find a new firmware for the drive that doesn't have a region lock. Read the flashing instructions very carefully before flashing, you only get one shot at it.
2. Download dvdecrypter, old but very useful software. It'll rip dvds and remove the region locking from the image. Also instal magic iso and this will allow you to pretend to have an extra dvd drive - 'a vitrual' drive. You can then mount the dvd image on this pretend drive and play it from it.