How to Fix irql_​not_​less_​or_​equal Error on Win­dows 10

When your Windows 10 PC shows a blue screen of death (BSOD) error screen, that means a fatal problem with your computer. The good part about several types of BSODs is that they come with an error code or message assigned. So if your computer shows you the IRQL_NOT_LESS_OR_EQUAL error, then try out the fixes mentioned below.

Fix windows irql not less or equal error feature imageii

Some Causes of the irql_not_less_or_equal Error

The stop code 0x0000000A also represents the IRQL_NOT_LESS_OR_EQUAL error. Some of the common causes of the error include:

Corrupt System Files

This is one of the most common causes of the error code. In this case, the file that is needed for the system to boot gets corrupt. This might be as a result of power outages, disk write errors or virus attacks.

Faulty Hardware Items

Another major cause of the error code is faulty hardware items. The two major items that may be faulty include the RAM module and the motherboard.

Incompatible Device Drivers

If you just installed a new device driver and it is faulty or incompatible, this error will occur.

Downgraded Windows Installation

This cause is quite rare, and it means installing an older version of Windows over a newer one. It is very likely that when you do this, some of the system files don’t get replaced as they should.

Incorrect Software Installation

If you have not instaleld a software properly, especially the one that deals with the hardware to some level, you might see this error.

Overheated CPU

Your CPU could begin to malfunction if it is overheated. As such, the computer shuts down with the help of the BSOD. This way, the CPU is protected from damage.

Old Operating System or Drivers

At times, the PC with an outdated software or Windows version

How to Fix IRQL_NOT_LESS_OR_EQUAL Error

When the IRQL_NOT_LESS_OR_EQUAL error occurs, your PC is likely to crash. After the crash, Windows automatically restarts the system. To prevent the error from reoccurring, try the following fixes:

Verify Your Device Has the Latest Update

As established previously, outdated software can cause your Windows 10 device to display a blue screen error. To ensure, your system has the latest update, follow these steps:

Step 1: Click the Windows/Start icon.

Step 2: Select Settings.

Fix windows irql not less or equal error step 1

Step 3: In the Settings window, click Update and Security.

Fix windows irql not less or equal error step 2

Step 4: In the next window, click on Check for Updates. If there are outstanding updates, ensure you install them.

Fix windows irql not less or equal error step 3

Step 5: To ensure your system receives the latest updates, ensure you enable automatic updates by selecting Advanced Options.

Fix windows irql not less or equal error step 4

Step 6: Tap the Automatic Updates toggle to On.

Fix windows irql not less or equal error step 5

Restart Windows Using Clean Boot

Where Windows is wrongly installed, restarting Windows using clean boot can help prevent the IRQL_NOT_LESS_OR_EQUAL error. Doing this means that only the processes and services needed to run Windows will start when the computer boots. Here’s how it works:

Step 1: Click on the Search icon on the Windows Taskbar.

Step 2: Type MSConfig into the search bar.

Fix windows irql not less or equal error step 6

Step 3: Select System Configuration from the search results.

Fix windows irql not less or equal error step 7

Step 4: In the new window, click the Services button on the menu.

Fix windows irql not less or equal error step 8

Step 5: Click on the checkbox beside Hide all Microsoft services.

Fix windows irql not less or equal error step 9

Step 6: Click on Disable all.

Fix windows irql not less or equal error step 9

Step 7: Click the Startup button on the menu.

Fix windows irql not less or equal error step 10

Step 8: Click on Open Task Manager.

Fix windows irql not less or equal error step 10

Step 9: Right-click the startup programs that you think might be causing the error.

Fix windows irql not less or equal error step 11

Step 10: Click on Disable.

Fix windows irql not less or equal error step 12

Step 11: Close the Task Manager.

Step 12: In the System Configuration Window, click on Apply then OK to save changes.

Fix windows irql not less or equal error step 13

Step 13: Restart your computer.

Fix windows irql not less or equal error step 14

Clear Memory Cache

The memory cache plays home to the temporary files that your operating system needs to function. The cache may get corrupt and lead to the BSOD error. Here’s how to clear your memory cache on Windows 10:

Step 1: Click on the Search icon on the Windows Taskbar.

Step 2: Search for Disk Cleanup and launch the app.

Fix windows irql not less or equal error step 15

Step 3: On Disk Cleanup, click on the checkbox beside Temporary files.

Fix windows irql not less or equal error step 16

Step 4: Click on OK to clear your cache.

Fix windows irql not less or equal error step 17

Repair Corrupted Files in Registry

Sometimes, the reason for the IRQL_NOT_LESS_OR_EQUAL error is corrupted files. To fix this, you must repair the corrupted files in the Registry. Take the following steps:

Step 1: Click on the Search icon on the Windows Taskbar.

Step 2: Search for Command Prompt.

Fix windows irql not less or equal error step 18

Step 3: Right-click on the search result and select Run as Administrator.

Fix windows irql not less or equal error step 19

Step 4: In the Command Prompt, type sfc /scannow command.

Fix windows irql not less or equal error step 20

Step 5: Click Enter after writing the command and a scanning process should commence.

Fix windows irql not less or equal error step 21

Step 6: Restart your PC once the scan is done.

Fix windows irql not less or equal error step 14

Fix White Screen of Death

That’s it for fixing one of the BSOD errors on Windows 10. Apart from BSOD errors, Windows 10 devices are also susceptible to the White Screen of Death. Some of the steps above can also help in fixing the error.


The above article may contain affiliate links which help support Guiding Tech. However, it does not affect our editorial integrity. The content remains unbiased and authentic.

Read Next

Join the newsletter

Maria is a Content Writer with a keen interest in Technology and Productivity Tools. Her articles can be found on sites such as Onlinetivity and Delesign. Outside of work, you can find her mini-blogging about her life on social media.