Hi, I'm Robinson, and I’m happy to help you today.
I know how frustrating this may be for you but I'll do my very best to help you.
You can use this procedure to reset Windows Hello.
Step 1- Stop the biometric service
1-Press the Win + R keys together to open a Run dialog box
2-Type services.msc
3-Select Windows Biometric Service from the left hand side column
4-Right click on it and select Stop from the list that appears
Step 2 - Backup the old database:
1-Open Windows Explorer
2-Navigate to C:\Windows\System32\WinBioDatabase
3-Copy and paste the .DAT files into a new folder you've created
Step 3- Delete the old database:
1-Open Windows Explorer
2-Navigate to C:\Windows\System32\WinBioDatabase
3-Delete the .DAT files
Step 4 - Start the biometric service:
1-Press the Win + R keys together to open a Run dialog box
2-Type services.msc
3-Select Windows Biometric Service from the left hand side column
4-Right click on it and select Start from the list that appears
Step 5 - Register your Biometrics again:
1-Go to Account Settings
2-At Sign-in options go through the registration process to re-register your biometrics