Choppy pic and sound from HP 400e

This 8x dvd+r record deck is running in XP W/intel 2.6 gb (close to that) processor with 512 ram. I've downloaded firmware updates. I have also installed Roxio 6.0, and Sonic MyDVD provided with the adaptec capture card.

It records fine, The problem is when I PLAY a DVD in the HP 400e deck, the picture on the computers monitor is choppy and the sound is "Pulsing and robot rat-a-tat metallic" so to speak. It will display beautiful still frames, but it looks like it's skipping every other second of the movie. Anybody know what the deal is here?