can't boot up

Last night i was playing ARK:Survival evolved. And after going in main menu the pc turned off and wont turn on. Peripheria lights are on. Upon clicking power button nothing happens. Then after opening case it briefly smelled like burnt dust Heres list of tests i did. -Bought new motherboard...

Hello there. Recently I bought a bunch of components for a new pc that I built. I slapped it all together everything worked fine. The pc didn't have a gpu so my friend offered me a cheap price on a gpu that he had lying around. I put in my pc; worked great! I play a certain video game where I...