Power switch on laptops

[meonly]

On my NOT-working HP G6 laptop I found that pin 1 is shortened to pin 3 on the power-on button cable when the button is pressed. Pin 1 is connected to GND (0 ohm to GND).
1. Is this the normal wiring in every laptop or maybe something is shortening that pin to GND?
2. If its the normal thing what is the mechanism of powering on the laptop?

 

[jarotech]

Hi, it's normal to have a side to ground of the power switch, when you push the switch you give a signal to the chip KBC to power the laptop if all the voltages are good.