Laptop BitLocker failing on drive with ACL corruption
4.5
The Access Control List for the drive is corrupted, blocking all system services.
Symptoms
- Total access loss
- BitLocker error 0x80070005
- System services fail
Possible Causes
- Registry errors
- Malware
- Disk errors
Step-by-Step Fix
1
Run SubInACL
Use Microsoft's tool to repair system ACLs.
2
Restore System Registry
Use a restore point to go back to a working state.
3
Reinstall Windows
Severe ACL corruption is often unfixable without a wipe.
When to See a Technician
ACLs are the foundation of Windows security; if they are broken, BitLocker cannot function.
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