Causes of kernel security check failure errors:

Virus or malware infection that has corrupted Windows OS files. Device drivers are outdated or not properly configured. Corrupted or bad memory. Conflicting hardware or software. Damaged or corrupted Hard Disk.

First, your need to enable legacy boot, and if you don’t know how to do that, just follow this post to enable your advanced legacy boot option. Before trying the below technical methods it’s advised that you do the following in order to fix kernel security check failure (KERNEL_SECURITY_CHECK_FAILURE) error:

Make sure only one antivirus is running if you have purchased another make sure to turn off Windows Defender. Run Automatic Repair or use System Restore to try to fix the issue. Run a full system virus and malware scan with your antivirus. Install any pending updates through Windows update. Reinstall drivers from the manufacturer’s website. Run malware bytes.

Fix kernel security check failure (KERNEL_SECURITY_CHECK_FAILURE)

Method 1: Uninstall Graphic Card Driver

  1. Boot your PC into Safe mode from the advanced boot menu.

Fix kernel security check failure (KERNEL_SECURITY_CHECK_FAILURE) Method 1: Uninstall Graphic Card Driver Method 2: Run Driver Verifier Method 3: Run System File Checker and Check Disk Method 4: Run Memtest86 Method 5: Run Disk Cleanup and Error Checking

  1. Press Windows Key + R then type “devmgmt.msc” and hit Enter to Device Manager.

  2. In Device Manager, expand the Display adapter.

  3. Next, select your Nvidia card and then right click then select Properties.

  4. Now select the Drivers tab and click on Roll Back Driver (If asked for confirmation click Yes to confirm).

  5. If the Roll Back option is grayed out then click “Uninstall” to uninstall this driver.

  6. Restart your PC and on the advanced boot, select “Start your PC normally.”

Method 2: Run Driver Verifier

This method is only useful if you can normally log into your Windows, not in the safe mode. Next, make sure to create a System Restore point. To run Driver Verifier to fix kernel security check failure, go here.

Method 3: Run System File Checker and Check Disk

  1. Again, Boot your PC into safe mode from the above-advanced boot menu.

  2. Once you login into safe mode, press Windows key + X and click on Command Prompt(Admin).

  3. In the command prompt, type the following command and hit enter after each one:

  4. Once the process is finished, exit the cmd.

  5. Now type memory in the Windows search bar and select “Windows Memory Diagnostic.”

  6. In the set of options displayed, select “Restart now and check for problems.”

  7. After which Windows will restart to check for possible RAM errors and will hopefully display the possible reasons as for why you get the Blue Screen of Death (BSOD) error message.

  8. Reboot your PC and check if the problem is resolved or not.

Method 4: Run Memtest86

To be sure, again run the memory test, but this time using Memtest as it eliminates all the possible exceptions, and it’s better than the built-in memory test as it runs outside the Windows environment. Note: Before starting, make sure you have access to another computer as you will need to download and burn the software to the disc or USB flash drive. It’s best to leave the computer overnight when running Memtest as it sure likely to takes some time.

  1. Connect a USB flash drive to your working PC.

  2. Download and install Windows Memtest86 Auto-installer for USB Key.

  3. Right-click on the downloaded image file and select the “Extract here” option.

  4. Once extracted, open the folder and run the Memtest86+ USB Installer.

  5. Choose your plugged USB drive to burn the MemTest86 software (This will erase all the content from your USB).

  6. Once the above process is finished, insert the USB to the PC, giving the KERNEL_SECURITY_CHECK_FAILURE error.

  7. Restart your PC and make sure boot from USB flash drive is selected.

  8. Memtest86 will begin testing for memory corruption in your system.

  9. If you have passed all 8 phases of the test, you can be sure that your memory is working correctly.

  10. If some of the steps were unsuccessful, then Memtest86 will find memory corruption which means that your kernel security check failure (KERNEL_SECURITY_CHECK_FAILURE) blue screen of death error is because of bad/corrupt memory. 11.In order to fix kernel security check failure error, you will need to replace your RAM if bad memory sectors are found.

Method 5: Run Disk Cleanup and Error Checking

  1. Again, boot your windows into safe mode and follow the below steps for each hard disk partition you have(example Drive C: or E:).

  2. Go to This PC or My PC and right-click on the drive to select Properties.

  3. Now, from the Properties window, select Disk Cleanup and click clean up system files.

  4. Again, go to the properties windows and select the Tools tab.

  5. Next, click on Check under Error-checking.

  6. Follow the on-screen instruction to finish error checking.

  7. Restart your PC and boot to windows normally. That’s it, you have successfully Fix kernel security check failure (KERNEL_SECURITY_CHECK_FAILURE), but if you still have any queries regarding this guide, then feel free to ask them in the comments section.

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