Prior fixes in the forums for SteamVR/VR games won't start:
1) Update GPU driver or try rolling back AMD driver ( https://www.48675488.xyz/app/250820/discussions/0/4137187221851895565/ )
2) Reinstall Microsoft Visual C++ Redistributable v14 (for Visual Studio 2017–2026) ( https://www.48675488.xyz/app/752480/discussions/0/671726025354453295/?tscn=1764920127 )
2a) Reinstall Microsoft Visual C++ Redistributable for Visual Studio 2013 64 bit. ( https://www.reddit.com/r/Vive/comments/vgp1bm/after_many_months_of_unuse_i_cant_get_my_vive_pro/ )
2b) Reinstall Microsoft Visual C++ 2015 Redistributable Update 3 ( https://www.48675488.xyz/app/250820/discussions/0/3011179244453797867/ )
2c) Reinstall Microsoft Visual C++ Redistributable for Visual Studio 2012 Update 4. ( https://www.48675488.xyz/app/611660/discussions/0/2987539784438685582/ )
2d) Repair both Microsoft Visual C++ Redistributable for Visual Studio 2013 "x86 and x64" ( https://www.48675488.xyz/app/547590/discussions/0/3725072690809543924/?tscn=1730797482 )
2e) These users had to remove it before the reinstall would work ( https://www.48675488.xyz/app/547590/discussions/0/4693405245808106548/?tscn=1731862029 )
2f) Install MSVCR120.dll ( https://www.48675488.xyz/app/547590/discussions/0/4693405245808106548/?tscn=1751775771 )
2g) Repair these two versions in the right order ( https://www.48675488.xyz/app/752480/discussions/0/685242695859462944/?tscn=1768064101 )
2h) Remove them all and reboot, run without any ( https://www.48675488.xyz/app/250820/discussions/0/798966028860265861/?tscn=1775776773 )
3) You must have SteamVR installed. Try different versions of SteamVR by either switching to the stable branch or to the beta branch, or to the previous version ( https://www.48675488.xyz/app/2494440/discussions/0/806845754928835880/?tscn=1773704162 ). If you are an oculus user, you still must have SteamVR for most steam games.
4) If you are using a laptop, see if your laptop has an option to disable the integrated GPU, either via the laptop manufacturer’s control software or in the BIOS. If no such option exists, try forcing both the game and SteamVR to use the dedicated GPU. If you need instructions, see here ( https://www.windowsdigitals.com/force-chrome-firefox-game-to-use-nvidia-gpu-integrated-graphics/ )
5) If you are using a laptop with an AMD Ryzen processor, a very particular fix that has helped a number of people is to go to the Device Manager, then disable and re-enable the integrated Radeon graphics.
6) Reinstall steam. ( https://www.48675488.xyz/app/250820/discussions/0/3601219829870413249/ )
7) uninstall the Citrix remote desktop display adapter in device manager ( https://www.48675488.xyz/app/698260/discussions/2/3598968030048391526/ ) https://www.windowsdigitals.com/force-chrome-firefox-game-to-use-nvidia-gpu-integrated-graphics/
8) unplug HMD, uninstall USB devices (also for steamvr starts but stuck in floor) ( https://www.48675488.xyz/app/1704080/discussions/0/3758852249519942171/ )
9) Uninstall Virtual Desktop ( https://www.48675488.xyz/app/1125240/discussions/0/4039230885219702181/?tscn=1703542225 )
10) Change openxr runtime to SteamVR. Open SteamVR settings via the ≡ hamburger button in the top-left of SteamVR on your Desktop. Go under "OpenXR" and select "SET STEAMVR AS OPENXR RUNTIME" for your system. Restart SteamVR and reconnect then see if your games launch. ( https://www.48675488.xyz/app/250820/discussions/2/4036978698796173614/?tscn=1703637799 )
10b) ...Or set it to auto for meta ( https://www.48675488.xyz/app/1125240/discussions/0/3592213151643689762/?tscn=1765224577 )
11) If unreal engine 4 game on 10th or 11th gen intel cpu, try this fix ( https://www.48675488.xyz/app/590690/discussions/0/3055111535926023249/ )
12) Don't launch SteamVR with elevated privileges, and be careful about it inheriting elevated privileges from steam ( https://www.48675488.xyz/app/250820/discussions/2/7056649947876468494/?tscn=1710526349 )
13) run Nvidia GeForce Game Ready Drivers Controller ( https://www.48675488.xyz/app/250820/discussions/2/7026264836508448727/?tscn=1723935658 )
14) if bluescreen, uninstall AMD adrenalin, clean and reinstall compatible driver ( https://www.48675488.xyz/app/250820/discussions/0/4847652375940390546/ )
15) reduce preferred refresh rate in config file ( https://www.48675488.xyz/app/250820/discussions/0/4692279960859068466/?tscn=1729298111 )
16) run steam in Win 8 compatibility mode ( https://www.48675488.xyz/app/250820/discussions/2/632293373537950998/?tscn=1737430105 )
17) reinstall logitech G hub ( https://www.48675488.xyz/app/250820/discussions/0/693120506653644257/?tscn=1765016619 )
18) SteamVR Home quits immediately: unsub all workshop environments ( https://www.48675488.xyz/app/250820/discussions/2/693120026285233006/?tscn=1764201520 )

I have intel stuff and before it used to open but now it doesn’t open now