DVD video not recognised

I bought a dvd and when i introduce it in to my computer ,it tells me is a blank dvd. I exchanged it in the store and i had the same problem
But i have other dvds from the same brand and it works ,well it takes a while for my computer to open them but they work.nowDVd
Are now DVds computer proof?
Thanks.

Mafelona, welcome to the discussions.
Shut your computer clear off, wait a minute and then restart your computer and go to Mac HD and click and open then go to Applications and click and open it and then scroll down to DVD Player, click on it and when the black screen opens put the DVD in and don't touch anything and your DVD should start playing.....Tell us how you do...Don

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