Critical Structure Corruption BSOD (0x109)

What is CRITICAL_STRUCTURE_CORRUPTION?

A critical system kernel structure corruption occurred. The Windows kernel detected that a third-party driver or hardware modified critical kernel code or data structure.

Common Causes

• Faulty system memory (RAM)
• Malicious software kernel hooks
• Unstable driver modifying kernel tables

Step-by-Step Fix Guide

• 1
  Run MemTest86 to check memory health

  Running memory diagnostics is key because bad RAM is the most common cause of structural metadata corruption.

• 2
  Uninstall recent drivers or security software

  An offline scanner checks for deep rootkits hooking kernel APIs.

• 3
  Run Windows Defender Offline scan

Commands & Diagnostics