I just setup my Rift and ran into a problem. I don't know how common it is but here's the solution.
I have a Nvidia 1080 graphics card. When I plugged in the HDMI cable to the video card I got no connection. The software from Oculus would not recognize the connection. I tested the HDMI connection and it was working fine. I had another HDMI connection on my comp and that would not work either.
Googling the problem. I found that if you use a Display Port to HDMI adapter it fixes the problem.
The Oculus tech support was unhelpful and this info was nowhere to be found on their website.
I also found I could not use my already downloaded version of AH with Rift. One must DL the AH app while using your Rift and set it up in the headset. Again no information was provided by the Oculus reps. One must just figure stuff out on ones own. Just use the search function in the Oculus apps screen that comes up.
Getting it to run was a PITA but worth it. I really love the feel of it. I had kind of lost interest in the game but this has rekindled my addiction.