No Power to the Entire Car: Ignition, lights, etc.

Sounds like a loose connection. I would start with the 12 Volt battery and the ground where it attaches to the vehicle.

If moving something made things light up do it again looking for loose connections.

 

The problem might be coming from the fusebox lo action at the hood.

Check power supply from the battery (12V), to the fusebox itself. If you don't have power coming to the fusebox, there's an open or shortcuit on the circuitry.

If there's power to the fusebox, then I bet one of the ignition ON relays/fuse might be failing.

But in this case, yours might be a short circuit problem, in the wiring or fuses/relay, considering that its only when the car is cold, you experience this problem. But when it has being driven like you've done for some time, it appears to have fixed itself.

Y it appears to have fixed itself after you drove is because the wire harnesses in the related circuits, undergo thermal expansions during those times you drove the car, providing the necessary contacts on the relays or... Immediately it cooled down, the wires contracts, and the circuit is broken.


PS: Check connectors also.

Dxta

 

And wiggle the fuses themselves too, not just the wires to the fusebox.

Just an open circuit, not a short circuit.

Short circuits cause excessive currents, leading to sparks or blown fuses or hot parts or drained batteries. Lack of current (without a drained battery) means an open circuit.