Asus B450-F Motherboard won't power on

Sep 26, 2018
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Hello!
I recently build myself a new PC and I have an issue with the motherboard Asus ROG Strix B450-F Gaming.

I cannot manage to boot it up. Usually when the 24-pin is connected and the PSU plugged in, a ROG logo lights up on the cover of the AIO. Mine doesn't, can't boot up the PC either.
My PSU is the Be Quiet! Pure Power 10 CM 500W.
I have also tried connecting it to another PSU, same thing.
Is the motherboard broken? (I bought it on amazon and send it back because there was another problem (that time it booted), so this is basically the second one they are sending me).

Here is the rest of the components in the PC:
CPU: AMD RYZEN 5 2600
GPU: Asus Cerberus GTX1050TI A4G
RAM: Corsair Vengeance LPX 16GB (2x8GB)

All those are placed in a Corsair Carbide 275R, if that is helpfull.
Any help?
Thanks in advance