Error codes

0x00000109

CRITICAL_STRUCTURE_CORRUPTION

What it means

Windows noticed that its kernel code or data had been changed while running.

Common causes

• Old virtualization, anti-cheat or cheat software
• Faulty RAM
• Bad drivers

How to fix it

1. Uninstall old emulators, virtual machine tools or system tweakers you no longer use.
2. Test the RAM: run Windows Memory Diagnostic (search mdsched) or MemTest86 from a USB stick. Any error means a stick or its speed setting is the problem.
3. Open Terminal (Admin) and run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth. Restart afterwards.