I just got my 3060 XC today, changed nothing else about my computer (upgraded from a 1060). After I plugged everything back in and powered on, I had no output in my monitors (both using DP). I got an HDMI cable to try that, and that outputs fine. Tried the 3060 in my friend's rig (he has a 2060) and we encountered the same issue.
Our builds are both Win10 but otherwise very different; 4 monitors and 4 cables tested seems pretty indicative of a GPU sided issue to me. I tried driver reinstall, several reboots, all the ports, disconnecting power and waiting, all to no avail. GeForce Experience and Device Manager detect the card correctly, yet they do not detect any DP monitors when connected. I tried the manual detect display button in Windows settings, still no luck.
Should I RMA?