Is this regarding Windows Hello, if so then try steps below
Setting up Windows Hello and resolving possible issues.
Setting up the display
The webcam must be in the up position. If it is not, press down and release to raise it.
Figure 1: Webcam in the up position
Webcam in the up position
Connect the display and install the software that came with it.
Connect to the internet and run Windows Update (this will install the latest drivers).
On the computer, go to Settings > Account > Sign-in Options > Windows Hello to enable the feature. As part of the setup process, you must set a PIN code.
Once the Windows Hello feature is enabled, there is a training process that must be completed. Sit so that you are centered in the screen with your face about 1 meter (inches ) from the display while performing the training exercise.
**Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
**Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
**Although I am an HP Employee, I am speaking for myself and not for HP.