Pattern to record: Repair scans stall or new errors appear at the same disk locations.

Identify the storage layer

BitLocker is an encryption layer, not a file system. The NTFS-specific checks here apply only after the authorised volume is unlocked and its underlying format is confirmed; retain the recovery key before firmware or hardware changes. One possible explanation is that critical file-system records occupy unreadable or unstable storage blocks.

Protect data before repair

Never clear TPM or format the volume while recovery information is uncertain. Repair scans on failing media can increase damage and reduce recovery.

Evidence to check on the protected copy

1. Confirm ownership and recovery credentials before testing metadata or hardware changes.
2. Clone readable sectors first and review physical health before logical repair.

Recovery and verification

If the checks support this cause, recover data from the clone and replace the failing storage device. Verification should cover authorised unlock, restart, file access, backup and recovery-key documentation.

For an assessment of your encrypted Windows computer, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.