I have a sony vaio laptop P 3 At 500MHZ and a car adapter for power. How can I start the computer when I start the car and shut it down when I turn off the car. I looked at shutdown controllers but those are for desktops they are diff right?
I did alot of searching but no help yet

I have a Kenwood Excelon deck, Amp, and two Rockford P3 subs at 600 watts each thats a total of 1200 watts when I would turn up my deck the will the amp take too much power from the laptop then kill it. I have a optima battery and the head rest screen still dims when the bass hits could this damage a laptop.