How to fix my camera? It is showing green screen whenever i open camera in windows 11 (HP 255 G8 Notebook PC)

Since restart, app reset, and reinstall did not help, use this Windows 11 path:

1. Check for a camera privacy switch or shutter on the laptop.
   • Many laptops have a physical camera switch, keyboard key, or small shutter near the webcam.
   • On laptops, this can be an Fn key combination, a dedicated camera key, a side switch, or a built-in shutter.
   • If it is off or partially blocking the lens, the camera can show abnormal output.
2. Test the camera in the Windows Camera app.
   • Open Start > Camera.
   • If the green screen appears there too, the issue is not limited to one app.
3. Check Windows camera permissions.
   • Go to Start > Settings > Privacy > Camera.
   • Make sure Camera access for this device is on.
   • Make sure Allow apps to access your camera is on.
   • If the problem happens in a desktop app such as a browser or video meeting app, make sure Allow desktop apps to access your camera is also on.
4. Install Windows and optional driver updates.
   • Go to Start > Settings > Windows Update > Check for updates.
   • If nothing camera-related appears, go to Advanced options > Optional updates and look for camera driver updates.
   • Install available updates and restart the PC.
5. Update the camera driver in Device Manager.
   • Open Start > Device Manager.
   • Expand Cameras.
   • Right-click the camera > Update driver.
   • Select Search automatically for drivers.
   • Restart the PC after the update.
6. Reinstall the camera driver.
   • Warning: this removes the current camera driver before Windows reinstalls it.
   • In Device Manager, right-click the camera > Properties.
   • Open the Driver tab > Uninstall Device.
   • Select Delete the driver software for this device, then select OK.
   • In Device Manager, open Action > Scan for hardware changes.
   • Restart the PC and test again.
7. Switch to the built-in UVC driver.
   • Warning: this can reduce camera-specific features. Windows Hello face recognition may no longer work if the manufacturer driver provided custom features.
   • In Device Manager, find the webcam under Cameras or Imaging devices.
   • Right-click it > Update driver.
   • Select Browse my computer for drivers.
   • Select Let me pick from a list of available drivers on my computer.
   • Select USB Video Device > Next.
   • Close Device Manager and test the Camera app again.
8. Run the camera troubleshooter.
   • In Windows 11, run the automated camera troubleshooter in the Get Help app: Run the troubleshooter in Get Help
9. Check antivirus or firewall software.
   • Some antivirus or firewall products can block camera access.
   • Temporarily disable that protection and test the camera.
10. If the green screen remains, get the camera driver from the laptop manufacturer support page.

• For laptop-specific webcam issues, reinstalling the camera driver supplied by the manufacturer is a recommended next step.

A green screen in all apps after app reinstall usually points to the camera driver, privacy shutter/switch, or hardware-specific webcam driver rather than the Camera app itself.

References

• Camera doesn't work in Windows
• camera does not work after update to windows 11 - Microsoft Q&A my camera is not working after updating to windows 11 and showing this, even the camera switch button shows the camera is not on (there should be a light on the button if the camera is on), what should i do?
• regarding camera - Microsoft Q&A when i try to open camera app it is showing error. it says camera isnt detected.. how to fix this issue
• my camera does not function in windows - Microsoft Q&A When I open camera I can not see my face ,just a black image
• Cannot get webcam to work in Win 11 - Microsoft Q&A Since win 11 has been installed I can no longer get my web cam to work. Panel on screen is either flashing or just white.