This sounds like some power IC has a loose connection or cold solder joint and jostling and heating recreates a connection. To be certain, you could try booting with the laptop back panel open, if it fails, use a heat gun to gently apply heat to the motherboard and see if only doing that (without jostling) allows it to wake.

Literally any microblog that has a webring. You just need to hunt for them from various sources like YouTube and forums.

Yes. Most people are this way.

That looks like an OrangePi