BIOS update now locked out

RAATZ Ian 0 Reputation points
2026-09-28T00:24:41.9633333+00:00

Hi,

I just completed BIOS updates now I’m unable to sign into my computer. I have tried my computer password and Microsoft password. And also changed my Microsoft password. Please help.

Windows for home | Windows 10 | Windows Hello, lock screen and sign-in
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  1. GsN5034 - IA 77,990 Reputation points Independent Advisor
    2026-09-28T03:02:21.39+00:00

    Hello,

    1. What is the exact error message you see on the Windows Sign-in Screen?
    2. May I please know if you have signed in with a Microsoft account or a local account on the device?

    If you make major changes to your PC, such as installing a BIOS update or Future Windows Updates, Windows will ask you to reset your PIN or Password for Security reasons.

    If you have set up a Windows Hello PIN and it isn't working, select the "I forgot my PIN" option on the sign-in screen itself and follow the prompts to reset it.

    Likewise, if you have set up a password sign-in, try resetting the password from the Sign-in screen by selecting the 'I forgot my Password' option.

    If you aren't seeing the option to reset your PIN or Password on the sign-in screen, let me know the exact error message you see there now. (OR) Post a picture of the error message here.

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  2. AI answer

    2026-09-28T00:24:59.5933333+00:00

    A BIOS update can trigger a Windows Hello PIN reset because TPM-related data may change. Start with the sign-in method that matches the account on the PC:

    1. On the Windows sign-in screen, select Sign-in options.
      • If a PIN was used before, look for I forgot my PIN.
      • If the device uses a Microsoft account password, look for I forgot my password.
    2. If the PC signs in with a Microsoft account:
      • At the sign-in screen, select I forgot my password.
      • Or select Sign-in options > Web sign-in, then sign in and choose Forgot my password.
      • From another device or browser, the password can also be reset here: Reset password.
    3. If the Microsoft password was already changed but sign-in still fails:
      • Use the Sign-in Helper: Sign-in Helper
      • Avoid repeated sign-in attempts, because too many failed attempts can temporarily lock the account.
      • If the account was temporarily locked, wait at least 24 hours before trying again.
    4. If the device uses a local Windows account instead of a Microsoft account:
      • On the sign-in screen, select the arrow next to the password box.
      • Select OK > Reset password.
      • Answer the security questions for that local account.
    5. If Windows is showing the wrong profile after the BIOS update:
      • Restart and enter BIOS/UEFI.
      • Verify the correct system drive is first in the boot order.
      • Save changes and restart.
    6. If none of the reset options work:
      • Use Contact Support from Microsoft support.
      • Microsoft support cannot retrieve or bypass a lost password, and support agents cannot send password reset links or change account details.
    AI-generated content may be incorrect. Read our transparency notes for more information.

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