How to Fix Win32kfull.SYS Failed BSOD Error?

Hi,

I’m getting a Blue Screen of Death on Windows 11 with Win32kfull.sys failed (sometimes with codes like SYSTEM_SERVICE_EXCEPTION or KMODE_EXCEPTION_NOT_HANDLED). It happens during boot or when running apps.

I’ve tried rebooting, but it persists. Possible causes could be corrupted drivers, faulty RAM, bad system files, or recent updates.

What’s the most effective way to fix this permanently?

Tagged: Windows

Windows

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Mira Lennox Lennox

Participant

October 14, 2025 at 9:12 am

Start by running sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth in an admin Command Prompt to repair corrupted system files. Next, update all your drivers—especially GPU, display, and chipset—directly from the manufacturer rather than Windows Update. If it started after a recent Windows update, try uninstalling that update or using System Restore. Faulty RAM can trigger this too, so run Windows Memory Diagnostic or MemTest86. If none of that works, a clean boot can help identify a misbehaving app or service causing the crash. Avoid reinstalling Windows unless all else fails.

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