window 10 hello cannot turn on camera for face recognition when starting up

[Huckonant]

System: 64bit
Battery or AC: Both
Model: vivobook S531FL-BQ559T
Frequency of occurrence: alway
Reset OS: Window 10
Screenshot or video:
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Detailed description：
When power on laptop, encounter error massage - "couldn't turn on the camera. Please sign in using your PIN."
checked camera are working fine.
please advise how to resolve this issue.

[Blake_ASUS]

Hello Huckonant,
If you enter Settings> Accounts Sign in Options
is there any error message or recommendations ?
Are you able to set up Windows Hello Face again?
Thank you.