Samsung SD-612

Evening guys, hopefully this isn’t the dumb question of the day, I suppose you’ll let me know if it is!!
Anyway my DVD drive won’t read DVD ROMs, it reads CD ROMs OK.Haven’t bothered using it for a couple of years for DVDs only CDs. Now I’ve got a few DVD ROMs I want to browse I can’t! It used to read DVDs OK. I think ME has been installed since I last used it to read a DVD.