KillC

I can’t get my motherboard(Msi z270 gaming pro) to start using the power button or the power switch pins, it showed no signs of life. but when i tried shorting the res pins the computer started to life and the motherboards led lights started. so my two questions are, could there be any explanation for why the power pins won’t work but the res pins do and can i just put the power switch on the res pins instead?