Link to the camera driver:
https://support.lenovo.com/bg/en/down...
In this video, I'll show you how to fix the problem of your webcam turning on but not displaying anything in your PC. It may not be a hardware issue, so don't throw your webcam just yet. Although this video speaks about the Lenovo FHD 300 webcam, I think this will be an issue common across different webcams.