Thanks ... they checked with "diagnostic tools" and found nothing amiss in the actual hardware. Not sure exactly what they did though. When you say "DVD-Rom" what are you referring to in this unit. I thought that was the disk itself. I am not electronically savvy. This DVD checked out fine in another car though. any more ideas? I not finding any suport from Alpine ... used to be able to see what had changed on updates and version numbers, etc. Do you know of a site that maintains that information or another reputable reseller.