Dear peterberriman,
Hello! Welcome to the Microsoft Community. I'm glad to be able to assist you. If I misunderstand your question, please let me know promptly.
I know that when you use Windows Hello, you will get stuck in the interface of "make sure your face is centred". I understand the inconvenience caused by this problem, and I will try my best to help you solve it.
-Use a camera or other tools to turn on the camera and see if it is normal. To update the driver, you need to find the driver corresponding to your computer model and system model on the driver download website provided by HP.
Official HP® Laptop Drivers and Software Download | HP® Support
Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
-Find your IR camera in your device manager, which may be located in "Imaging Devices", update your IR camera, and then check again to see if the problem is solved. You can refer to this post.
Windows Hello Setup stuck at "Make sure your face is centered in the - Microsoft Community
-turn off the quick start: go to settings > system > power and sleep > other power settings > select the function of the power button > change unavailable settings > uncheck the quick start.
-Change an account to see if the problem still occurs.
Press win+R and enter lusrmgr.msc to open Local Users and Groups.
Right-click the Users folder and select New User.
Enter the user name and password, and then click Create.
To the right of the newly created account, select the account type and set it as administrator.
Now go to the newly created local account and see if the problem has been solved.
I hope the above information can be of help to you. If you have any progress or questions, please feel free to let me know.
Best Wishes
Pyked | Microsoft Community Support Specialist