If I touch a 1 uF capacitor by parallel, laptop powers on. Unlike desktop computers' BIOS, most laptop's BIOS including mine does not have such power settings and no 'wake on lan' option.
The problem is, when AC power lost and come back, the laptop can not be powered on automatically. When I need a hard reset, I want to be able make this happen with a toggle of AC power. I'm running the laptop without battery in case of a need for a hard reset. I'm using one of my old laptops as a server.