P05B-i7-8565U has the capability to activate automatically upon receiving power, however, the BIOS does not provide an option to configure this feature. To enable it, we must utilize the Pin Header and establish a connection between the two pins on the board.
First, please gather a pin header (2.54mm Short Circuit Connector) and a screwdriver. If you do not have a pin header available, you can acquire one locally or online. Alternatively, feel free to reach out to your contacts for assistance in obtaining one.
Then, remove the screws on the computer’s bottom case.
Then, you can find the 3 pins onboard as marked in below picture.
Put the pin header onto the no.2 and 3 pin will be ok.
Now, reassemble your PC case to its previous configuration, and your computer will automatically power on once it's connected to the power supply.