I just bought a 3060 and had a monitor with DisplayPort. Before installing the drivers, the image was displayed, but once I installed the drivers from NVIDIA's website, there was no signal. I thought, "What’s going on?"
So, I connected an HDMI cable to see if it would work, and it turns out that HDMI does display an image, but DisplayPort doesn't on any of the three DisplayPort ports. What could be the issue?