Since you went back to the shop and they were willing to help, and since you’re having so much trouble, it may be worth it for you to go back with your computer and let the guy fix it on the spot with you there. Make sure to bring your Avatar DVD with you so that you can test it before you leave. Again, I would say if you know a computer person having them come over is still your best option.

From what you have been saying I think it is a good possibility that you are having compatibility issues and someone with some experience just needs to sort it all out.

However, I would agree with one of the previous posts that it is also a possibility that your drive is physically failing. It could even be both issues together.

I hope this helped a little, sorry I can’t do more. God Bless You.

Bernclay-