Hello, I am new to DVD backups and DVD ripping. I read the guides and they are very helpful. I used DVD Decrypter to rip a movie to the hard disk (size was 4.3); then I wrote it using DVD Decrypter to a DVD-R. The first sveral chapters play fine both on the PC and DVD player. About halfway through, I start getting audio skips and then video freezing and then a black screen and the PC locks up. The source DVD is fine. Any ideas appreciated. John