My car is a 2000 with only 6,000 miles on her. The other day I was driving and the screen went black, with white lines going back and forward. Turned the car off and on and sure enough the problem was still there. Radio still works but cuts out about ever five minutes or so - I have to turn it off and on then it starts working again but cuts out quickly. The navigation never worked before this problem occurred; I was quoted a large number to fix that so I chose to just live without it. What could this problem be? Do I need an entirely new screen or could it possibly just be a fuse? Thanks for the help.