I ran into the age old issue of problems after installing/updating drivers. I have a ASRock B450M Pro4 motherboard in my current home PC and have been having issues with my new webcam. Every time I join a Zoom meeting the my video doesn't work until I unplug/re-plug in the camera. As with most low to mid range webcams it uses the generic Microsoft driver so naturally I'm thinking it's an issue with the USB drivers. I updated my chipset drivers to the latest ones provided by AMD, but the USB 3.1 driver remained the same. I manually forced the driver to use what was in the extracted driver folder and rebooted. Reboot was clean, but I couldn't use my keyboard/mouse/any USB port. There are no PS/2 ports so I had to remove those newer drivers from Windows recovery mode using the command prompt.
There are many other sites that also contain this information, but it is very helpful so I wanted to provide easy instructions.
1. Enter Windows recovery. At the POST screen tap the function key that will get you into recovery mode. This differs from model to model, but is typically between F8 to F11.
a. Alternatively if you have recovery boot media you can boot from that disk or USB drive
2. Once in repair mode choose Troubleshoot
3. Choose Command Prompt
4. The command prompt will start in X:\. You will need to change this to your boot drive. That will typically be D: or E:. With out the quotes type "D:" or "E:" and press enter.
5. Type DIR and press enter. Ensure you see your boot drive folders to make sure you are in the correct drive.
6. Now type the following command to see all installed drivers
dism /image:e:\ /get-drivers
7. Hopefully you know what was updated so you know what to look for. Identify the Provider Name, and Class Name. In my case I was looking for Provider Names of AMD and Advanced Micro Devices with the Class Name of USB
a. You can get further information on a specific drivers listed with the following command replacing ## with the corresponding number.
dism /image:e:\ /get-driverinfo /driver:oem##.inf
8. Now you can remove the problematic driver/s with the following command, again replacing ## with the corresponding number.
dism /image:e:\ /remove-driver /driver:oem##.inf
9. Once all the problematic drivers are removed close the command prompt window. Click continue and reboot.
Hopefully your problem is fixed!