What is KERNEL-SECURITY-CHECK-FAILURE?
This critical-severity issue affects the Windows operating system. The KERNEL_SECURITY_CHECK_FAILURE bug check has a value of 0x00000139. This BSOD indicates that the kernel has detected corruption of a critical data structure. This is usually caused by memory corruption, driver issues, or hardware failure. Common triggers are corrupted system drivers and corrupted Windows system files. Use the steps below to track down and fix the cause.
Common Causes
- Corrupted system drivers
- Defective RAM memory modules
- Corrupted Windows system files
- Incompatible third-party security software
Step-by-Step Fix Guide
-
1
Run System File Checker (SFC) and DISM
Applying SFC/DISM restores critical system files that may have caused data structure corruption.
-
2
Check memory using Windows Memory Diagnostic or MemTest86
Testing RAM is crucial as faulty memory is a major source of 0x139 kernel checks.
-
3
Update or rollback recently installed device drivers
If earlier steps didn't help, "Update or rollback recently installed device drivers" directly addresses corrupted system drivers.
-
4
Disable overclocking in BIOS/UEFI
Still seeing KERNEL-SECURITY-CHECK-FAILURE after that? "Disable overclocking in BIOS/UEFI" is the next thing to check.
Commands & Diagnostics
sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth
mdsched.exe
Frequently Asked Questions
KERNEL-SECURITY-CHECK-FAILURE is most often triggered by corrupted system drivers. Other reports point to defective RAM memory modules, corrupted Windows system files and incompatible third-party security software as contributing factors.
Try "Run System File Checker (SFC) and DISM" first — it resolves most KERNEL-SECURITY-CHECK-FAILURE cases on its own. Only work through the rest of the guide above if it comes back.
Yes — KERNEL-SECURITY-CHECK-FAILURE is a critical-severity error and can lead to data loss or hardware damage if it's ignored. Don't put off the fix steps above.
You shouldn't need to. Work through the guide above first — a reinstall is only worth considering if none of those steps help.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including KERNEL-SECURITY-CHECK-FAILURE. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
Still Need Help?
Search our full database of 535+ documented PC errors for more solutions and step-by-step repair guides.
Search Error Database