If you have two graphic cards in your computer, check if the game is run in performance mode. It should be running on the faster one as if run on the slower one, the output doesn't go to the headset.
It's the Lenovo Legion Y520 GTX 1060, it looks like this is an issue of display adapters, I see both the integrated CPU Graphics processor and the GPU. I tried following the comments here, but no luck... https://www.reddit.com/r/oculus/comments/6b5g0a/
Alright! It turns out there's a similar setting in Windows 10 that fixed the problem for me! https://www.howtogeek.com/351522/how-to-choose-which-gpu-a-game-uses-on-windows-10/