For a long time I was able to burn my backup copies of DVD movies with ease using DVD shrink and Nero. Then I started having problems. So I bought a new Liteon DVD burner and got Nero 6. Now I can't get one DVD burned successfully that I can read. So far I have tried burning with DVD Shrink where it automatically uses Nero, I have tried using Nero Burning rom and burning the Video files manually and I have even burned an ISO file with DVD Decrypter. Each time the DVD won't playback and isn't even recognised in the Drive !!!. Can someone please tell me what to try next !