Hello good people. Issue is as it says in the topic. I am at my wits end on this one, so any help that you can shoot my way will be met with eternal gratitude!
The bios chip has 4.60 printed on it and the box has a neat little 'Ryzen 2000 series ready' sticker on it.
The CPU heatsink fan spins up, the power LED turns on, the HDD is spinning and there is power to the USB ports.
I have built the system with the parts below:
Things I have tried:
RAM - Removing / replacing / placing into different configurations.
CPU - taking off the heat sink and checking it is seated happily (it is).
Power - ensuring that the 8 pin and 20+4 pin connectors are connected (they are).
Monitor - checking that it is working on another machine (it is). Trying a different monitor (also doesn't work).
Drinking coffee / meditating - still frustrated.
Thanks for any and all help!