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StanleyQ's avatar
StanleyQ
Copper Contributor
Jul 09, 2025

Got put into BitLocker recovery mode after latest Windows Update

PC also kept shutting down rapidly after this screen opened, I had to enable Compatibility Support Module in UEFI to stop it happening. Then I could enter the recovery key.

What does the Bootmgr_Separator error indicate?

configuration
deployment
device management
security
Update management

4 Replies

  • Barbarank's avatar
    Barbarank
    Iron Contributor
    Jul 14, 2025
    1. Insert your Windows 11 installation media
    2. Boot from the media and select "Repair your computer"
    3. Choose "Troubleshoot" > "Advanced options" > "Startup Repair"
    4. Let the process complete and restart your computer
    • StanleyQ's avatar
      StanleyQ
      Copper Contributor
      Jul 14, 2025

      Thanks, I could get into Windows with the recovery key, so no need. My CPU is unsupported by Windows 11 so I've decided it's safest to disable BitLocker until I upgrade.

  • Sasompark's avatar
    Sasompark
    Iron Contributor
    Jul 11, 2025

    Enabling CSM switches your firmware from strictly UEFI to a legacy BIOS compatibility mode. This can sometimes bypass certain UEFI-specific boot issues, especially if the boot files or partitions are misconfigured for UEFI.

    • StanleyQ's avatar
      StanleyQ
      Copper Contributor
      Jul 11, 2025

      Thanks, even with CSM enabled, BitLocker prompts for the recovery key on every boot now. This machine is running Windows 11 but the CPU is unsupported so I'm going to assume I must abandon BitLocker until I upgrade my PC.

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