Question New pc will not boot I don't even get any power to the MOBO

[Sammywhu]

Hi I have just built my first pc I press the power button get a flash of the RGB on my MOBO and then nothing after that. I haven't a clue what could be wrong it may be the PSU or the MOBO.
Can anyone help

 

[Sammywhu]

Hi I have just built my first pc I press the power button get a flash of the RGB on my MOBO and then nothing after that. I haven't a clue what could be wrong it may be the PSU or the MOBO.
Can anyone help

Sorry I forgot to say the specs it is a Ryzen 5 3600 with b450 aorus elite MOBO 16GB of ram Rx 580 and a seasonic s12iii 500 w power supply