Plugged in new graphics card, now computer won't output signal with the new, the old or intergrated graphics.

GTX 1070 (Old card)

RTX 3070 (New card)

700 watt Hyper M PSU

ASUS PRIME B350M motherboard

16 gigs of ram

Ryzen 1500X

I bought a new 3070 a couple days ago, after replacing my old 1070 and plugging in the power cables, the monitor does not output anything. Same if i plug in the old card or if i take the cards out and try to run intergrated. Never heard any POST-signals but i don't think this motherboard has a speaker.

I've tried to start in safe mode, resetting BIOS by removing the CMOS battery and holding the power button down (power cable unplugged of course), switching over cards, unplugging everything but computer power cable and video cable.

Someone got any idea why this god forsaked machine is acting this way? It was fine just this morning.