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0x00000109BSODCritical

0x00000109 — Critical Structure Corruption | Blue Screen Fix Guide

CRITICAL_STRUCTURE_CORRUPTION

Windows 10Windows 11

What Does 0x00000109 Mean?

The kernel detected critical data structure corruption. This may indicate tampering, hardware failure, or a severe bug.

Real-World Causes

  1. 1Kernel data structure corruption
  2. 2Rootkit or malware tampering with kernel
  3. 3RAM hardware failure
  4. 4Driver corrupting critical kernel structures

Symptoms

  • ⚠Blue screen with stop code CRITICAL_STRUCTURE_CORRUPTION
  • ⚠System reboots unexpectedly
  • ⚠Possible data loss from unsaved work

DIY Fix

Beginner-friendly steps you can try at home

  1. 1Restart your computer
  2. 2Run full antivirus scan
  3. 3Run System File Checker (sfc /scannow)
  4. 4Check Windows Update

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze minidump for security subsystem failure
  2. 2Check security event logs
  3. 3Verify system file integrity with DISM
  4. 4Review Group Policy and security settings

Frequently Asked Questions

What causes CRITICAL_STRUCTURE_CORRUPTION?
The kernel detected critical data structure corruption. This may indicate tampering, hardware failure, or a severe bug.
Can I fix Critical Structure Corruption myself?
In many cases yes. Start with basic troubleshooting like restarting, updating drivers, and running System File Checker. If the issue persists, advanced analysis of crash dumps may be needed.

Related Error Codes

0x0000001AMemory Management0x000000A2Memory Image Corrupt

About the Author

Windows Troubleshooting Team

Verified against official Microsoft documentation and real-world diagnostic data. Error behavior confirmed across Windows 10, Windows 11, and Windows Server.