Fixes

System scan at raised IRQL caught improper driver unload error

Some users are also suggesting using Display Driver Uninstaller to remove your graphic card driver, so you might want to try that as well.

After your PC restarts, check if the problem appears again. If there are no errors, you can continue using the default driver, or you can try to update to a newer version.

We have to mention that this problem was reported by SiS Mirage 3 Graphics owners, but even if you own a different graphic card you can still try this solution.


5. Uninstall your antivirus/firewall

Firewall and antiviruses are important for your system safety, but sometimes these programs can interfere with Windows 10 and cause SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD error to appear.

According to users, Barracuda NextGen Firewall F-Series was causing this error to appear, and after removing this tool the BSoD error was fixed.

We have to mention that almost any antivirus or firewall program can cause this error, and in order to fix it you’ll have to remove all third-party antivirus programs from your PC.

Bear in mind that uninstalling your current antivirus program might not fix the issue, and you’ll have to use a dedicated removal tool to remove all files associated with your antivirus program.

To download the removal tool for your antivirus, simply visit your antivirus developer’s website and download it from the support section.

On the flip side, you can also go for an antivirus tool that doesn’t cause problems, so it doesn’t need removal either. One such antivirus is Bitdefender Antivirus Plus.

Get Bitdefender


5. Run Chkdsk scan

  1. Press Windows Key + X and choose Command Prompt (Admin) from the menu.
    System_scan_at_raised_irql_caught_improper_driver_unload spac.sys
  2. When Command Prompt opens, enter: chkdsk /r X:
  3. Press Enter and wait for the scan to finish.

Blue Screen of Death errors can sometimes occur due to corrupted files on your hard drive, and in order to find and fix those files, it’s recommended that you perform a chkdsk scan.

We have to mention that you’ll have to repeat this scan for all hard drive partitions in order to fix this error.

Bear in mind that you won’t be able to scan C partition while in Windows 10, and you’ll get a message saying that your computer needs to restart in order to scan the C drive.

  1. Restart your computer few times during the boot sequence to start Automatic Repair.
  2. Choose Troubleshoot > Advanced options > Command Prompt.
  3. Run the chkdsk scan.

Note: If you cannot access Windows 10 at all due to this error, you can run Command Prompt by following the steps mentioned above.


6. Remove overclock settings and check your hardware

Many users tend to overclock their hardware in order to get better performance, but overclocking your hardware comes with certain risks.

If you’re not careful you can cause permanent damage to your PC by overclocking, or you can get a Blue Screen of Death error.

Several users reported that they managed to fix this error by setting their RAM settings to default.

Bear in mind that almost any overclocked component can cause this error, so be sure to remove all overclock settings.

If your PC isn’t overclocked, this error could be caused by faulty or recently installed hardware, so be sure to remove any new hardware since it might not be compatible with your PC.

If that doesn’t work, check your RAM, motherboard, hard drive, and all other major components.

SYSTEM_SCAN_AT_RAISED_IRQL_CAUGHT_IMPROPER_DRIVER_UNLOAD error is usually caused by incompatible drivers or overclock settings, but you can easily fix this error by using one of our solutions.


By following these steps you should be able to quickly and easily get rid of any driver unload errors that you may encounter while using your Windows 10 PC.

Let us know which one of the above-mentioned methods worked best for you by leaving us a message in the comments section below.


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