Pc looks to have turned on but no signal and no system beep.

Hello ,
If you did read the the title you may of found out that my computer looks to of turned on ( all fans spinning, gpu leds and fans on , External and Internal leds are on. But the monitor only reads no signal. I have tried swapping mointors i tried three diffrent ones as well i swapped my gpu out another 2 times to see if that was the problem, Well its wasn't.

My part list is
https://au.pcpartpicker.com/list/7KhbTH
as well as a 1000gb seagate sdd . I thinks thats right.

So the setup is completely new straight out of the box, i have never succesfully made it passed the no signal screen.

I have tried resetting the bios, as well as jump starting it those both failed .I tried cleaning the ram .

I have ran out of ideas but i do think the mother board is the problem as when i removed the ram and started the computer it did not beep.

Please someone help .

Thanks for your time Xavier Hay.