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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