Fixes

Kernel security check failure RAM in Windows 10

We strongly recommend the DriverFix tool to update your drivers in order to avoid the damage to your PC by manually downloading the wrong driver versions.

This great program looks for new drivers for your hardware and downloads updates automatically.

It scans your system and lists all existing and possibly missing drivers. The tool also detects if there is already a new version for current records. If necessary, these can be updated directly via DriverFix.

Already installed drivers can also be stored in an archive and used, for example, when the system is restored.

However, we recommend you to download this driver updater tool (100% safe and tested by us) to do it automatically. Thus, you will prevent file loss and the damage to your PC.

DriverFix

Keep your drivers updated for your system to run properly with the DriverFix software.

3. Check the RAM

The RAM can be the source of the problem that causes your computer to restart and to display the Kernel security check failure error.

If the problem began after you swapped the RAM with a newer one, try to put back the one you already had. If it works fine with the old RAM, then the problem might be with the recent one.

For almost every motherboard, the manufacturer normally displays a list of RAM that have been tested with that motherboard.

You might want to check whether your new RAM is on the list or use one that is listed. Also, ensure that it is properly fitted in the right place.


4. Check the hard disk for errors

windows installation encountered an unexpected error

  1. Press the Windows key + R, type cmd, and hit Enter.
  2. Right-click on Command Prompt, and select Run as administrator.
  3. In the command line, type chkdsk c: /r, and press Enter.
  4. Wait until the procedure ends.

A corrupted HDD with bad sectors, can invoke a variety of errors, including the one we’re addressing today. For that reason, we encourage you to check your hard drive for possible errors.


Can’t access Command Prompt as an admin? Take a look at our guide.


5. Run the System File Checker

error 0x800f0900 windows 10

  1. Press the Windows key + R, type cmd, and hit Enter.
  2. Right-click on Command Prompt, and select Run as administrator.
  3. In the command line, type sfc/ scannow, and press Enter.
  4. It might take a few second for the scan to complete. Wait patiently till its shows 100% scan is complete.
  5. Restart your PC.

The System File Checker (SFC) is a utility in Windows that can scan and restore the corrupted system files.

If at any given time you interfered with the system files or maybe you have replaced or applied some tweaks to the system files while customizing your Windows, and now you find that your OS is misbehaving, you may want to run this utility first.


6. Run the DISM

error 0x800f0900 windows 10

  1. Press the Windows key + R, type cmd, and hit Enter.
  2. Right-click on Command Prompt, and select Run as administrator.
  3. In the command line, copy-paste the following lines one by one, and press Enter after each: DISM /online /Cleanup-Image / ScanHealth DISM /Online /Cleanup-Image /RestoreHealth
  4. Wait for the resolution.

If the SFC tool fails, we can always turn to DISM. The Deployment Image Servicing and Management tool is similar to SFC.

However, besides the fact it can rebuild whole system image in case of corruption, there are two ways you can use it.

The first one relies on Windows Update to replace the corrupted files. The second rather uses an external installation drive (USB or DVD) to apply fixes.


7. Run the BSOD troubleshooter

    1. Hold Windows Key + S.
    2. Type Settings in the search box, and click on it.
    3. Head over to Updates & Security, and choose Troubleshoot. 
    4. Select Blue Screen, and go to Run the Troubleshooter. 
    5. Follow further on-screen instructions and let the process finish.
    6. Restart your computer.

If DISM failed to resolve the problem, let’s try Windows 10’s built-in troubleshooting tool. This tool can help you resolve various issues, including BSOD errors.


Don’t forget to tell us whether one of the solutions get you through the problem. If you have any other suggestions or questions, feel free to leave them in the comments section below.

Editor’s Note: This post was originally published in July 2018 and was completely revamped and updated in October 2020 for freshness, accuracy, and comprehensiveness.


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