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Since you speak good English I will re-post my first post in English here since there are misinterpretations of it:
I'll give you everything that works for fixing the 1) PIN and 2) Hello Fingerprint:
- Here's here how to reset the PIN in Windows 10 when it will not work from Settings > Accounts > Sign In Options:
Open Windows File Explorer using the file folder icon on your task bar.
Tick the box in File Explorer View tab to Show Hidden Files.
Browse to C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc
Delete or rename to Ngc.old this folder to reset the PIN.
**You may need to first take ownership of the folder: https://www.tenforums.com/tutorials/3841-add-ta...
Once you delete or rename the folder it will recreate it so you can add a PIN normally in Windows Settings > Accounts > Sign-In Options. You may need to restart the PC first.
For any unexpected problems see the full illustrated tutorial covering all possible problems here:
https://www.askvg.com/fix-unable-to-add-and-use...
- See fixes for fingerprint reader:
https://helpdeskgeek.com/windows-10/how-to-fix-...
https://www.technorms.com/43772/troubleshoot-fi...
https://pureinfotech.com/fix-windows-hello-fing...
https://www.thewindowsclub.com/fingerprint-read... (Avoid ad links which intrude into editorial copy, especially avoid Restoro ad)
See fixes here for Windows Hello:
https://windows10skill.com/windows-hello-not-wo...
- Turn off Fast Startup: Go to Settings > System > Power & Sleep > Additional Power Settings > Choose what Power buttons do > Change settings that are unavailable > uncheck Fast Startup.
- Reset Facial Recognition and/or Fingerprint Options
https://blog.goptg.com/how-to-reset-windows-hel...
- Modify Group Policy Settings (for Pro version only)
Updates might have modified some of the crucial settings of Group Policy. Therefore, we would recommend to launch the Group Policy Editor and check/edit the settings related to Windows Hello functionality.
Pres Windows key, type gpedit, and press Enter.
Click on Computer Configuration and open Administrative Templates.
Select Windows Components and open Biometrics.
Click on Facial Features and right-click on Configure enhanced anti-spoofing option.
Select Edit and disable the Configure enhanced anti-spoofing feature.
Reboot your PC.
- Update drivers from the PC maker's Support Downloads webpage only. The most basic thing we need to learn to maintain a PC is how to keep the latest manufacturer's drivers current. Windows Update drivers are never enough.
If some of the system drivers, most probably webcam and fingerprint reader drivers, were corrupted during the version upgrade process, Windows Hello may fail to perform. To fix that, try to update the corresponding drivers:
Right-click on Windows key and select Device Manager.
Locate the Hello, webcam, and fingerprint drivers individually and right-click on each of them.
Select Remove driver software and wait for the removal to be finished.
Repeat the removal with all Windows Hello related drivers and then reboot your PC.
Once done, open Device Manager, click Action -> Scan for hardware changes.
The system should automatically detect and reinstall the drivers.
- If this was caused by Windows Updates then you can check which were installed at Settings>Update & Security>Windows Update under Installed Updates, then uninstall them from the link there, and hide with the Hide Updates tool as shown here: https://www.howtogeek.com/223864/how-to-uninsta...
- If this was caused by a Version Update then for 10 days you can roll it back in Settings>Update & Security>Recovery and then hide it until it matures using the Hide Updates Tool which is explained more here:
https://www.howtogeek.com/223864/how-to-uninsta....
- Go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...
Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files, and also Step 16 to test a new Local Admin account. Then continue with the other steps to go over your install most thoroughly.
- Update your drivers and BIOS/UEFI firmware from PC or motherboard maker's Support Downloads web page, using the full model number, Serial Number or Dell Service Tag on sticker. Compare the latest drivers available for download with the ones presently installed in Device Manager reached by right clicking the Start Menu. Make sure you have the latest BIOS or UEFI firmware, Chipset, Display (Video), Sound, USB3, Bluetooth, Network and all other drivers, or else download and install the latest now.
Updating drivers from the Device Manager or Windows Update is rarely enough. The most basic thing we need to learn to maintain a PC is keep the latest manufacturer's drivers installed from their Support Downloads web page.
- If nothing else works then do a Repair Install, by installing Media Creation Tool, open tool and choose to Upgrade Now. This reinstalls Windows while keeping files, programs and most settings in place, and is also the most stable method to advance to the latest version. http://windows.microsoft.com/en-us/windows-10/m...
- I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.
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Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.