the unit starts up and says starting naviagtion like normal. than nothing. the touch screen buttons are still working and so are all functions, but nothing appears. this is actually not the first time this happened. about 6 months back I got in the car and it did the same thing. I pushed the reset button and it came back. this time though resetting the unit isn't doing anything. it can't be the light as it does come on and say starting navigation. anybody else have this happen and how did you fix it? thanks.

ok, this just got stranger. got in the car after sitting for a few hours, it says starting navigation and then gives me this large disc read message. it then booted up like a factory reset. I am glad it is working again, but now the engineer in me wants to know what happens to cause this? anyone else experienced a similar issue?