My drive will not recognise some original dvd's

hello, the drive in my laptop is a TssT corp TS-L632D, it was a spare drive that i got from a broken laptop and it had hardly been used, its been working fine for months, just recently it wont read some dvd’s, some of them being original dvd movies,nothing happens when i insert 1 of the dvd’s that wont play, the disc spins for a while and then stops, and in explorer it shows no disc inserted, its weird because the dvd’s can be originals or copies, the drive will burn dvd data and dvd video and sometimes it cannot read a dvd it has just burned, the original dvd’s vary in age from 2000 to the present day so i dont think its a type of copy protection, another thing is that i changed the dvd drive in my laptop originally because it to stopped reading any dvd except data dvd’s, I dont burn that much on the laptop so i cant see why it could be failing…maybe another replacement is needed. anyone have any feedback on the drive i am using, TssT Corp, think thats the name of it anyway…