Games where working fine, all sudden I get dirty disc error. And now none of my backup games will play. Have not tried original games yet, don't want them to scratch up. It either says unplayable disc or it will say open tray. Is my drive shot? I have ms25 running ixtreme 1.2c (slow)

Any help would be great

Games will not be scratched up instantly - try an original

As Darren said, try your originals first.