New Pc build has no power?

New Pc build has no power?

Hello thank you reading my post I completely build my first pc got a tuf x570 plus wifi motherboard , ryzen 5600x , gigabyte 5500 xt, Corsair 4000x , h100i platinum, and a game Max 750w psu. The problem stars after finishing my setup the board is completely dead no rgb no fans nothing how can I test if my motherboard is dead?