Try going into Device Manager. Right click My Computer under start, and click manage.
Find your webcam and right click update and it might update via the web.
On another note, it maybe loose cabled in the laptop. Has it been dropped?
Xiaomi Mi Mix 2 review
What went wrong at the Designs of the Year 2017
iPhone X news: Release date, price, new features & specs
Comment créer, modifier et réinitialiser un compte Apple ?