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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...
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.
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.