Adding a power button to laptop for using as SBC

Question

My laptop power button is included with the keyboard. And when I remove the keyboard from the keyboard port of motherboard, there is no way to start the laptop.

The reason I want to remove keyboard is:

1. The laptop has an SoC Atom processor and consumes very low power.
2. I would like to take the SoC like a raspberry Pi and connect it to power behind my monitor and use it as a full time torrent machine.

motherboard with the keyboard ribbon cable

This is the image of the keyboard ribbon cable.

Is there a way to add a power button on to this SoC and use it as a windows 10 RPi without the keyboard.

The one way to turn on the SoC is to short the 3rd pin to ground as shown in many YouTube videos but it won’t be accessible once I hide it behind the monitor.

I have already checked BIOS. There is no way to turn on pc with AC power on.

Thank you for reading my request.

Answer 1

Solder a wire to the pin you've identified as the power button, and connect a momentary switch between that wire and ground.

Don't forget strain reliefs for the wire, as the solder connection might be susceptible to vibrations.