I just need to get this out to people who actually understand what this is like.
I finaly got all the parts for my car pc together after it died several months ago, and rebuilt it. i had it working on my desk for 3 days perfectly while i installed software and media, the touchscreen which is molded into my center console is also on my desk and works perfectly. I go out and install everything back into the car, power it up, and blank screen!! check the wires on going from the trunk to the front with my laptop and they are fine. i have no idea whats going on that would make it all not work in the car but be perfect inside. im pulling the whole thing back inside tomorrow to troubleshoot more.