Do not choose “Clear TPM,” “Reset Secure Boot keys,” or factory-reset BIOS/UEFI unless you already have the BitLocker key. Those actions can make recovery harder or permanent.
Because the screen says
Secure Boot policy has unexpectedly changed, the system may have detected a BIOS/UEFI, Secure Boot, TPM, firmware, or boot-order change.
- Power off the laptop completely.
- Disconnect all USB drives, external disks, SD cards, docks, and bootable media.
- Enter BIOS/UEFI setup.
- Check these settings:
- Secure Boot: Enabled
- TPM / Intel PTT / AMD fTPM: Enabled
- Boot mode: UEFI
- CSM / Legacy boot: Disabled
- Windows Boot Manager should be first in boot order
- Save changes and restart.
Expected result: if the TPM measurements match the old state again, Windows may boot normally. If not, it will return to BitLocker recovery.
Your screen shows a
Recovery Key ID. That ID helps match the correct saved recovery key.
Check all possible locations:
- Microsoft account recovery page:
https://aka.ms/myrecoverykey
- Work/school account recovery page shown on your screen:
[My Account](https://aka.ms/aadrecoverykey)
- Company or school IT/admin portal, if this was ever joined to an organization.
- Printed copy, PDF, text file, USB drive, OneDrive, email, or password manager.
- Any other Microsoft account ever used on that PC, including old Outlook/Hotmail/Live accounts.
Important: Do not post the 48-digit recovery key publicly. The
Key ID is okay for identification, but the actual recovery key should remain private.
- Enter the 48-digit key on the BitLocker screen.
- After Windows starts, open Command Prompt as Administrator.
- Suspend BitLocker temporarily:
manage-bde -protectors -disable C: -RebootCount 1
- Restart once.
- Re-enable protection:
manage-bde -protectors -enable C:
- Back up the recovery key again:
manage-bde -protectors -get C:
Also save it to your Microsoft account, a secure password manager, and an offline backup.
If the recovery key, password, Microsoft account, work/school account, and organization backup are all unavailable, then the encrypted data is not practically recoverable. In that case the remaining option is:
- Create Windows 11 installation USB from another PC.
- Boot from the USB.
- Choose Custom installation.
- Delete the encrypted Windows partitions.
- Reinstall Windows.