Sorry to be late.
Well, I uninstalled CP2077 and HL and then make a clean install.
The problem persisted.
It attached correctly, but it still crashed.
In the case of CP2077 it’s a couple of secs after the loading screen appear.
In the case of HL it’s a couple of secs after you loaded your game and are in game.
Maybe it has to do Steam VR?
thanks for your help.