Power up a laptop motherboard without power button or power strip.

Yes we can power up a laptop without connecting it's power button board or power strip..!! same as a desktop mother board.
It's safe as well as desktop motherboard just you need to know how power system of motherboard is functioning or how it's work as we press power button.Switching the power 'on & off' is done by circuits on the motherboard.The circuits are triggered to change state by a