Effective Ways to Fix Driver IRQL_not_less_or_equal Error 

Driver IRQL_not_less_or_equal is one of the most common problems faced by many Windows users. This can be caused due to a problem with your system’s memory or due to conflicts from other applications with the operating system. Moreover, you can face this error due to an outdated Windows operating system or if there is a fault with one of the device drivers.

How to Fix Driver IRQL_not_less_or_equal Error 

Before we start, you need to make sure that you have the latest updates installed in your system. If not, you can follow the given instructions to manually update your system. 

  1. From your main desktop, press the Start button and type ‘update’. Thereafter, press enter to open Windows Update. 
  2. From the left-hand pane, select Check for Updates and wait for the system to search the internet for available updates. 
  3. If found, click on Update to install the updates in your system. After that, restart your system and check if the error still persists or not. 

Solution 1: Run Memory Diagnostics Tool 

Sometimes, the problem is not particularly related to the software. Therefore, it might indicate a problem with the hardware. Thus, you can follow the instructions given below to debug your computer. 

  1. At first, press the Start button and type “Memory Diagnostic”. Subsequently, press enter to open the diagnostic tool.   
  2. Now, you need to select one of the two options available. Then, the windows will restart.
  3. You will be notified if there is a problem with memory. If there is, simply replace the RAM of your system and the problem should be fixed. 
  4. However, if the scan doesn’t return any errors, then it indicates that the problem lies somewhere else.

Solution 2: Fix System Files

Another cause of driver IRQL_not_less_or_equal error is due to a corrupted system file. Therefore, you can fix it by running the System File Checker. You can do this by following the steps given below.

  1. At first, go to the start menu and type cmd.
  2. After that, right-click on the command prompt and select the “Run As Administrator” option. 
  3. Now, type ‘sfc /scannow’ and press enter to execute it. 
  4. After that, wait until the scanning process is completed. The tool will automatically scan and fix any broken system files. After that, restart your computer and check if the error has been resolved. 

Solution 3: Run System Restore 

If you have created a system restore point beforehand, then you can perform a system restore. This will help to undo any changes to your system settings that may have caused this error in the first place. Thus, follow the instructions given below to do so. 

  1. First, open the Start menu and type “System Properties”. 
  2. After that, go to the “System Protection” option and click on the “System Restore” option.
  3. Thereafter, click on the ‘Next’ option and then, select the “Preferred Restore Point” option. 
  4. Then, select the “Next” option again and press the “finish” option. 

Now, your PC will restart and then the restoring process will begin. After the process has been completed, check if the problem has been resolved or not


To summarize, you will be able to fix the Driver IRQL_not_less_or_equal  error if you have followed all the steps provided above. Thus, make sure that each step was followed correctly. If you were unable to fix this problem on your own, then you need to get in touch with a professional who will help you out.