In reference to problem number 2:
Make sure you use the actual ignition power as the acc for your m2-atx. If you used say the acc wire that goes to your head unit as the acc for the m2-atx then this would cause your problem. This is because when you turn the key on your car the electrical system temporarily cuts power to peripherals such as the head unit in order to ensure that it is not damaged during the high amps.
key in acc mode: acc line gains power: computer turns on
turn key to crank engine: acc line loses power: computer turns off
engine started: acc line regains power: computer turns on
oh sorry I didn't realize how confusing that post might have came off as. When I was referring to the ACC on the m2-atx i was actually talking about the J3 power input connector.
UPDATE: Pictures, mostly completed. Probably can be pushed to show off my projects
Answers to others:
There is a dedicated feed that powers the amps, carpc, usb hubs, hd radio, and the monitor. So power should never just be cut off.
It only happens when I turn the car off. Probably just the crappy M2
Another SSD Failure, this is 3rd one with 2 different brands. I don't think its the SSD, I think its the power supply is not providing enough power or something.
I guess I'll order something bigger and more reliable, anyone have a suggestion?