Windows & BSOD · critical

How to fixKERNEL_SECURITY_CHECK_FAILURE

Kernel security check failure

What this error means

KERNEL_SECURITY_CHECK_FAILURE is a critical-severity Windows operating system problem. Windows has detected corruption of kernel data structures. Most often caused by a faulty driver or memory corruption. It's most often caused by defective RAM, overclocking and malware. The steps below are ordered to resolve this efficiently.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Run MemTest86

Run MemTest86.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Update all drivers

Update all drivers.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Run SFC and DISM

Run SFC and DISM.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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04Check the OC settings

Check the OC settings.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Incompatible driver
  • Defective RAM
  • Overclocking
  • Malware

Useful Windows tools

These commands open Windows tools. Review any action inside the tool before applying changes.

mdsched.exe