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Power on laptop without power button

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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.

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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.