restore webcam system

About a week ago, my friend asked me for help. He got it working and then opened settings, changed the contrast to try and make a better picture, but the screen it stuck gray. So he wants to restore his webcam to manufactory setting, and gets a better picture.

What is the make and model of the laptop?

1. Find the model of the laptop.
2. Download and install the Webcam software utility from the laptop manufacturer’s website, then try to reset the Webcam settings.
3. Your best way is to refer the user manual provided with your laptop for setup and Webcam settings instructions.
4. You may check with the laptop manufacturer for more help.

If you have the same question, I would suggest you to uninstall and reinstall the web cam from the control panel > add or remove programs.. then it would go smooth.