Unable to boot up after shutting down the pc with the power button on

Hello
I am writing this here and hoping for the reasoning behind the problem.
I recently bought z97-g43 motherboard as the old one broke and after buying it i got a replacement as every time when i was shutting down the pc with the button on the case the pc wouldnt turn on anymore. I found this as a problem when i did this for the first time and i wasnt sure what was going on. Doing it on the replacement motherboard second time i realised that this is the case. I just wanted to know why does this happen as sometimes im unable to restart the computer(no button on the case) or shut it down in windows 10 as this time when it happened my computer just like freezed or something. Is there a way to fix it on my own so i dont need to send it back again or there is no hope for it to work. Also, excuse me for not putting it in the right sub(i think) as on tapatalk i couldnt find the general support tab.
Thank you for any help. Also it might be the win10 issue but i dont think so, as on the motherboard that i broke this wasnt happening and i could normally boot up. To add - everytime i switch the motherboard it fully works and works normally

dalchina said:

Hi, it sounds awfully like you're running Windows, then powering down the PC rather than shutting it down properly as you should for a couple of very good reasons. I hope that's not the case.

Could you confirm you are not simply switching off your PC rather than shutting it down?

My guess is he's doing the short press that shuts windows down before turning the PC off , same as my PC with the same Mobo.

Well im unable to do anything right now as after shutting it down with a button it wont turn on anymore but all the leds are on. It was the first time i used the button as i couldnt do it from os(my pc froze).

I will try that method when i come back home. I used the physical button once because i couldnt do anything in windows so thats why i was forced to do it. I pressed and hold it for 5 seconds so the pc would shut down.. I guess that I just broke another motherboard by pressing this stupid button.

There is no problem with the Psu. It is actually the second time i got this problem but in a different scenario . First time when i was having the same motherboard i pressed the physical button while restartong because it wouldnt restart and then pc wouldnt turn on. I got a replacement and everything was working fine again after i switched the motherboard. It just seems like every time i press that button the motherboard breaks. I never use the physical button unless my pc freezes or something but as you can see i broke it anyway again. I think that i just need to stop using the button but what should i do then if my pc freezes again ?