[Solved] How to Fix IRQL_NOT_LESS OR_EQUAL Windows 11/10

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[Solved] How to Fix IRQL_NOT_LESS OR_EQUAL Windows 11/10
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While Windows 10 is the most popular version now, it still arouses some error codes during usage, and the BSOD error IRQL_NOT_LESS_OR_EQUAL is very common.

The IRQL_NOT_LESS_OR_EQUAL error code usually occurs on Windows startup, which indicates that a kernel-mode process or driver failed to access a memory location because it did not have permission or a kernel Interrupt Request Level (IRQL) was too high.

IRQL_NOT_LESS_OR_EQUAL dring startup

Also, when you are playing games that require high performance, you are likely to meet such a BSOD error code.

IRQL_NOT_LESS_OR_EQUAL during Windows 10 usage

In this article, you will learn some skills in removing the error code IRQL_NOT_LESS_OR_EQUAL on Windows 10.


Knowing the reason for a Windows error code is definitely helpful in preventing a similar error code from happening and quickly removing a stop code. Below are some noticeable causes responsible for driver_irql_not_less_or_equal:

  • Corrupt system files;
  • Incompatible device drivers;
  • Faulty hardware;
  • Registry issues;
  • Viruses and malware attack.

Now get the possible solutions to quickly fix driver irql_less_or_not_equal on Windows 10.

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How to Fix IRQL_NOT_LESS_OR_EQUAL Stop Code #

Tip: Usually, you are able to restart your computer and then get into Windows 10 successfully. Then, follow the fixed below to quickly fix issue.  If you are unable to, you may need to recover files from C drive and then reinstall Windows 10.

Fix 1. Clean Boot Windows 10

If a current running process leads to the IRQL_NOT_LESS_OR_EQUAL error, clean boot your Windows 10 will help you troubleshoot the issue. With a clean boot, only the necessary services and processes required for Windows 10 operation are started when booting your computer.

Here is what to do:

  1. Press Win + R to call out the Run dialog box.
  2. Type msconfig and press Enter.
  3. Go to General tab and then check Selective Startup option.
  4. Uncheck Load startup items.
  5. Now go to the Services tab.
  6. Check Hide all Microsoft services from the bottom left corner and then click Disable all.
  7. Click OK to confirm the changes.
  8. Restart Windows 10.
set do not load startup items
disable all non-Microsoft services

If this does not help and you want to revert the settings, go to the General tab, check the Normal Startup option, and then restart your PC.

Fix 2. Remove Unnecessary Devices

As Windows suggests, remove all unnecessary hardware devices (such as the peripherals, USB devices, and any other devices) from your computer. Be sure you are removing them one by one and then reboot, this would help you identify which hardware device is triggering the driver_irql_not_less_or_equal error to appear.

Fix 3. Uninstall the Problem Drivers

Faulty drivers are the main cause for IRQL_NOT_LESS_OR_EQUAL Windows 10. To fix the issue, you will need to find out and uninstall the faulty drivers. How do you know a drive is having the issue? Well, you will see a yellow mark next to its device if the driver is having some issue.

Here are the steps for your referral to uninstall a driver:

  1. Press Win + R to invoke the Run box.
  2. Type devmgmt.msc and click OK.
  3. In the Device Manager window, locate the faulty driver, right-click on the device name and then select Uninstall Device.
  4. Now you are likely to be prompted to confirm the driver uninstall. Check the option Delete the driver software for this device and then click the OK button. If you don’t see this box, just click OK to uninstall the driver.
  5. Restart your PC and check if the blue screen is gone.
uninstall problem drivers

Fix 4. Update to the Latest Drivers

Also, driver irql_less_or_not_equal Windows 10 can be caused by missing or corrupted drivers. To fix the problem, update the drivers straight from the manufacturer of your devices.

You can search for your drivers manually on the manufacturer’s website, or you can google your Hardware Manufacturers’ names + drivers. Then install the latest driver to your device.

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Fix 5. Disable Memory Cache

As the error screen suggests, you can enter in your computer’s BIOS/UEFI menu to disable the memory cache of your Windows system.

Follow the steps below so you can open the UEFI menu:

  1. Press Shift + Restart and hold on for a few seconds until you see the blue screen.
  2. Go to Troubleshoot and then Advanced Options.
  3. Click UEFI Firmware Settings and select Restart.
  4. Go to the Advanced Menu. Be aware that this menu may have a different name depending on your BIOS/UEFI version.
  5. Find the Cache Memory option and hit the Enter key.
  6. Select Disabled.
  7. Press F10 to save and exit your changes.
  8. Restart your computer.
disable memory cache

Fix 6. Run Hardware Diagnostic

RAM issue may also arise the driver_irql_not_less_or_equal error on Windows 10. To fix this issue, you can run Windows Memory Diagnostic tool.

  1. From Windows Search bar, type Memory Diagnostic and enter this tool.
  2. Click Restart new and check for problems. This will ask you to perform the check by restarting your PC immediately, please save any work you are processing or programs that are running before restarting.
  3. The diagnostic tool will scan on the memory and display a list of problematic errors which were detected during the scan.
  4. Finally, you can replace all faulty hardware detected in the scan and reboot PC.
check for memory problems

Fix 7. Scan and Remove Malware

If this is the case, installing some antivirus software to scan and thoroughly remove all malware from your PC should directly fix the irql_not_less_or_equal error. You can also run Windows Defender first before your go for any third-party software. Remember to restart your PC when all is done.

Fix 8. Reset or Clean Install Windows

Finally, if none of the above methods help, you need to do a clean install of Windows 10. Before you start, be sure you have a duplication of everything important. Then, use the Windows installation media to do a reinstall.

Get the most useful tips for how to remove BSOD stop code IRQL_NOT_LESS_OR_EQUAL on Windows 10. twitter.com