|It sounds to me like a hardware problem. First thing I would do is go to the manufacturers web site and see if you can find a firmware update. I had a problem with a DVD writer a while back that drove me nuts, and then I found there was a firmware fix for it.|
If that doesn't resolve it, see if you can borrow a external or internal DVD burner from a friend. If that device burns DVDs fine, then it's your drive. DVD Burners are cheap nowadays, so if you find it is bad, just replace it.