SteamVR Failed to Initialize (Error 109) …
https://steamcommunity.com/app/250820/discussions/0/357284131806024168
Delete the steamvr.vrsettings file in "C:Steamconfig" (replace C with your drive letter). Then uninstall SteamVR and re-install. Run steam in Compatibility mode. Restart the Steam VR and the Computer. Then replug all USB cables, reset USB drivers in Steam and System, disable USB power saving setting on Computer. Check for corrupt files in your installation and fix them. Activate the Driver for your HMD.
Delete the steamvr.vrsettings file in "C:Steamconfig" (replace C with your drive letter). Then uninstall SteamVR and re-install.
Run steam in Compatibility mode.
Restart the Steam VR and the Computer. Then replug all USB cables, reset USB drivers in Steam and System, disable USB power saving setting on Computer.
Check for corrupt files in your installation and fix them.
Activate the Driver for your HMD.
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