I can't get steamVR to detect my headset. I'm using an Oculus Rift that works fine through its own launcher but Steam just keeps telling me "please plug in your VR headset." I've reinstalled steamVR, have it running off the beta version, disconnected and reconnected everything in different ports, reinstalled Oculus software, updated all my drivers, updated C++, and restarted my computer a dozen times. What else can I do to fix this?