Blog

How to Fix Kernel Security Check Failure Error on Windows 11: Step-by-Step Solutions

The Kernel Security Check Failure error is a common blue screen issue on Windows 11. It usually happens when the system detects corrupted files or incompatible drivers. This error can interrupt your work and cause unexpected restarts.

Fortunately, there are several straightforward solutions to fix this problem. You don’t need to be a tech expert to try them. Just follow the step-by-step instructions carefully to resolve the issue.

In this article, we will guide you through simple to advanced methods to fix the Kernel Security Check Failure error. Each step explains why it is important and how to perform it on your PC.

By the end, you should be able to get your Windows 11 running smoothly again without this error.

Quick Note Before You Begin

  • Make sure your Windows 11 is updated to the latest version. Updates often include important fixes.
  • Check if you have any recently installed hardware or software, as they might cause conflicts.
  • Have a backup of your important files to avoid data loss during troubleshooting.
  • Ensure your PC is connected to a stable power source to prevent interruptions during fixes.

Step 1: Restart Your Computer

Sometimes, a simple restart can clear temporary glitches causing the error. Before diving into complex solutions, restart your PC by clicking Start > Power > Restart. After rebooting, check if the error still appears.

Step 2: Run Windows Memory Diagnostic Tool

Memory problems can lead to the Kernel Security Check Failure. Windows has a built-in tool to check your RAM for errors.

  1. Press Windows + S and type Windows Memory Diagnostic.
  2. Click on the app and select Restart now and check for problems.
  3. Your computer will reboot and test your memory. This may take several minutes.
  4. After the test finishes, Windows will restart. If errors are found, consider replacing your RAM.

Step 3: Update Device Drivers

Outdated or corrupted drivers often cause system errors. Updating drivers ensures compatibility with Windows 11.

  1. Press Windows + X and choose Device Manager.
  2. Look for any devices with a yellow exclamation mark, which indicates driver issues.
  3. Right-click the device and select Update driver.
  4. Choose Search automatically for updated driver software.
  5. If Windows finds a new driver, it will install it. Restart your PC afterward.

If no updates are found, you can also visit the manufacturer’s website to download the latest drivers manually.

Step 4: Run System File Checker (SFC)

Corrupted system files might cause the error. The System File Checker scans and repairs these files.

  1. Press Windows + S, type cmd, right-click Command Prompt, and select Run as administrator.
  2. In the Command Prompt window, type sfc /scannow and press Enter.
  3. The scan will check system files and fix problems automatically. This may take some time.
  4. Once completed, restart your computer and check if the error persists.

Step 5: Check Disk for Errors

Hard drive issues can trigger blue screen errors. Running a disk check can find and fix disk problems.

  1. Open Command Prompt as administrator (see previous step).
  2. Type chkdsk /f /r and press Enter.
  3. You might see a message stating the disk is in use. Type Y to schedule the check on next restart.
  4. Restart your PC to allow the disk check to run.

Step 6: Disable Fast Startup

Fast Startup can cause issues with some hardware drivers, leading to system errors.

  1. Press Windows + R, type control, and press Enter to open Control Panel.
  2. Navigate to Hardware and Sound > Power Options.
  3. Click Choose what the power buttons do on the left side.
  4. Click Change settings that are currently unavailable.
  5. Uncheck the box for Turn on fast startup (recommended).
  6. Click Save changes and restart your PC.

Step 7: Uninstall Recently Installed Software or Drivers

If the error started after installing new software or drivers, uninstalling them might help.

  1. Press Windows + I to open Settings.
  2. Go to Apps > Installed apps.
  3. Find the recently installed program, click the three dots next to it, and choose Uninstall.
  4. For drivers, use Device Manager to roll back or uninstall them.
  5. Restart your PC and check if the issue is resolved.

Step 8: Perform a System Restore

If the error persists, restoring your system to an earlier point can undo recent changes that caused problems.

  1. Press Windows + S and type Create a restore point.
  2. Select the option, then click System Restore.
  3. Follow the prompts to choose a restore point before the error started.
  4. Complete the restore and restart your PC.

Alternative and Advanced Methods

If the above steps don’t fix the problem, you can try these advanced options:

  • Update BIOS: An outdated BIOS can cause compatibility issues. Check your motherboard manufacturer’s website for BIOS updates and instructions.
  • Clean Boot: Starting Windows with minimal drivers and startup programs can help identify software conflicts. Use msconfig to perform a clean boot.
  • Reset Windows 11: This option reinstalls Windows without affecting your personal files but removes apps and settings. Go to Settings > System > Recovery > Reset this PC.

Frequently Asked Questions (FAQs)

What causes the Kernel Security Check Failure error?

This error often occurs due to corrupted system files, incompatible or outdated drivers, faulty hardware (especially RAM), or disk errors.

Will updating Windows fix this error?

Sometimes yes. Windows updates include fixes for bugs and security issues. It’s always recommended to keep your system updated.

Is it safe to update BIOS to fix this error?

Updating BIOS can solve compatibility issues but should be done carefully. Follow official instructions and back up important data before proceeding.

Can I fix this error without technical knowledge?

Yes. Many of the steps like restarting, running built-in tools, or uninstalling recent apps are simple and explained in detail above.

Does this error mean my PC hardware is failing?

Not always. It could be caused by software or drivers. However, if memory tests or disk checks find errors, hardware replacement may be needed.

When Nothing Works

If all the above solutions fail, you have a few final options:

  • Contact Microsoft Support: They can provide official assistance and tools.
  • Visit a professional technician: Especially if hardware failure is suspected.
  • Reinstall Windows 11: A clean installation can resolve persistent software issues but back up all data first.
  • Use Official Microsoft Troubleshooter: Available at Microsoft Support.

Conclusion

The Kernel Security Check Failure error on Windows 11 can be frustrating, but it is usually fixable with the right approach. Start with simple steps like restarting and running built-in diagnostic tools. Update your drivers and system files to ensure compatibility and stability.

If needed, move on to more advanced methods like system restore or BIOS update. Always back up your data before performing major changes.

By following these detailed steps, you can troubleshoot and resolve the Kernel Security Check Failure error effectively, helping your Windows 11 PC run smoothly again.

Leave a Reply