So I recently built myself a new pc from scratch and have double checked everything. When my GPU has the power cable plugged in, my pc doesn't turn on when I press the power button, I only hear a click from the PSU. When I unplug the 3070 from the PSU, it boots fine. I've already gone and installed windows, everything is working fine in regards to the CPU, fans, and storage devices. I've not been able to get any answers from googling so I really help someone here can help me.
Thanks!
(here's a part list if that helps)