PS3 Won't Play Blu-Ray Movies

[TommySyk]

My 250GB PS3 Slim Console plays games and DVD's perfectly, but when I insert Blu-Ray Movies into the console, it starts making weird sounds with pauses between each of them and then make a "fake eject sound". It will play certain movies but the majority of them won't. This started back in September but I didn't bother because I have a BD player on my living room that works perfectly, but now I'm rarely home alone so I can't watch movies there 'cause there's always someone watching TV. I've tried 'Restore File System' in Recovery Mode but it doesn't work, and I really don't want to erase all my data from my PS3. If someone knows how to fix this please tell me, 'cause I don't really want to send my PS3 to Sony for repairing.

Oh and I'm sorry if there's already a thread regarding this (I didn't find it) / this thread is in the wrong section.