i get this same message, i try playing a DVD movie that i purchased legally in the US, and thats where i live, so i dont think its a region code issue, in my dvd/cd-rw drive that came with the computer and i get that exact message. I have the Compaq Presario Sr1130nx, i have areadly updated my intervideo windvd player and it still happens, but it only happens on some DVD's, another DVD i purchased the same day from the same store play's back just fine in the same drive, i tried it in my friends DVD player. could somone please help me with this issue, i know its an old thread, also, im not too computer savvy so i didnt really understand what the people in the other posts were saying, i.e. ICQ, and it was a in-house install or re-install?? i just need to know what to do, thank you