You downloaded the "best" driver, but it still fails. Here is why:
Before searching the web, let Microsoft do the work.
Stop hunting for "hytech usb 20 webcam driver best" on sketchy forums. The best driver is already on your PC. You just need to teach Windows how to find it using the steps above.
If your computer does not automatically recognize the camera, you can often resolve the issue by:
Provides a catalog of generic USB 2.0 camera drivers collected from various manufacturers. Troubleshooting Tips