When our XP laptop hard-drive died, we had a new one installed.
But lost were the system components that came with it. We didn't know to do a system recovery set of discs.

Well, I only play a few DVD music type videos on computer. Never movies. When all was done, by our son, I couldn't play them either.

So we downloaded VLC and now my DVD's (music concerts) play fine again.. I don't download movies...I rarely buy the DVDs either. Yes, I know I am strange, but once I see a movie, I typically don't watch it again for a LONG time.

So I do wonder... 1) Mel, you say your husband bought this at Blockbuster? Was it new? or a resale of one that they didn't need anymore? The more this thread evolves, I have to wonder if it is a security coding on Avatar to keep people from copying it?

My impression is that this all has become way out of proportion to the value of the movie! I searched the web today and found many hits on Avatar not playing on computer. You are not the only one by far! The entertainment industry is on the verge of ruining their own market it seems to me!