BSOD with CRITICAL_STRUCTURE_CORRUPTION (kernel tampering detected)

The problem: Windows PatchGuard detects unauthorized modification to critical kernel structures and halts the system to prevent further damage.

Symptoms: Blue screen shows CRITICAL_STRUCTURE_CORRUPTION; often associated with rootkits, aggressive anti-cheat software, or poorly written low-level drivers attempting to hook kernel structures in unsupported ways.

Likely cause: Malware/rootkit attempting kernel modification, incompatible or buggy kernel-mode driver (common with certain anti-cheat or virtualization software), corrupted system files affecting kernel integrity.

Category: Blue Screen / BSOD · Difficulty: Advanced · Windows: Both · Error code: 0x00000109

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