How to fix Error 0xA: Driver IRQL Not Less Or Equal [Solved] | IRQL_NOT_LESS_OR_EQUAL BSOD in Windows 10 2021

How to fix Error 0xA: IRQL_NOT_LESS_OR_EQUAL BSOD in Windows 10. Check how to solve the ‘Driver IRQL Not Less Or Equal’ Error? This error means that something may be wrong with a device driver, your device’s memory, or antivirus software on your device.

What is the Irql_not_less_or_equal?

This error often appears at windows startup, blue screen, and recurrently crashing is a sign of this error. This error is known as a blue screen of death error. This is a very common error in windows 10. It can occur when you are trying to update the window or playing games. IRQL_ NOT_ LESS_ OR_ EQUAL is triggered by defective hardware or software. These errors refer that your software or hardware is not permitted to access.

What causes Irql_not_less_or_equal?

It occurs when a program, an application, or driver access to the RAM memory without permission. Here are some basic causes that can lead to the “IRQL NOT LESS OR EQUAL” error: Windows system files are corrupted. Install the wrong drivers or drivers conflict.

Follow the instructions below to fix the blue screen error. Easily! IRQL_ NOT_ LESS_ OR_ EQUAL


Typically this is a SYSTEM ERROR known as BSOD system error Driver irql not less or equal while we are trying to update the version of windows 10  or at the time of setting up any hardware device. Facing frequently this kind of error might be infuriating but we have come up with the solution and cause of death of blue screen to this problem in this article, keep reading for Driver IRQL less or not equal BSoD error.

Driver IRQL less or not equal error variations

This error occurs while-

1. Updating windows-

Common death of the blue screen appears in the middle of updating the version of the window. The reason that there might be a possibility that the new system file is not properly installed and it is creating a dispute between two different versions of windows. the system file  is  It can be solved by following a few steps but if you are scared that you might damage your system then you should consult a computer technician

2. Inharmonious drivers

IRQL error might occur when you are gaming on your system, it requires high efficiency that might trigger this error.

3. RAM related issues

This is a memory-related error Driver irql not less or equal , so it occurs in RAM here drivers are trying to obtain access of ram is not permitted to that particular device or more than one device. It creates confusion and this error appears on your screen. It might be possible that the motherboard of your system is damaged.

4. Obsolete and invalid devices

This is a valid reason for a system which are being used for gaming, for gaming different types if devices are used such as a mouse, keyboard, controllers gaming pad, etc in this case one device  denied to access  another device

5. Imperfect wireless equipment and lock area network connection

Presently online games are quite popular, If an IRQL error occurs while playing online games then the Internet connection and device being used for connecting wireless networks might be faulty.

6. BSOD error Driver irql not less or equal

Sometimes an overloaded system, high temperature of CPU, might accelerate this error, inharmonious derived for newly installed device these issues might trigger BSOD error.


Some times defective system files might be the reason for IRQL error, virus and malware can corrupt system file windows system file or windows OS.

8. Software regarding the issue 

IRQL error occurs when softer is not properly installed. Some times process of installing and uninstalling any software may cause e some kind of damage.

10. Antivirus

IRQL error is caused by the installation of software from other websites, antivirus is also content provided by another party this can trigger IRQL error.

11. Overclocking of system

Sometimes users increase the speed ( more than the standard speed ) of their computer for high performance this is very dangerous it might affect the temperature of the CPU  and it is another reason for the occurrence of error IRQL.

Steps to fix Driver IRQL less or not equal errors

This error is related to software-hardware drivers there is nothing specific about this error so to rectify this error firstly you should check drivers and hardware. And update all drivers on your system related to Driver irql not less or equal.

1. Updating windows

When your system reboots frequently then a basic solution to this problem is updating windows, this process should be completed in safe mode its will ensure proper software and drivers are installed by your windows OS.

Microsoft often launches a new version of windows with new features, advanced security, and troubleshooter. If you are having problems with your system that might be solved by updating the window to the newest can update windows by following the instructions given below.

  1. Go to the start menu and right-click on it, it will open a list here click on settings.
  2. Select the option Update and security, check if a new version is available then click on the window update.
  3. Clicking on the update will start the downloading process the after downloading a new version of windows.
  4. After completing the downloading process it will automatically install a new version of windows.
  5. Now restart your computer and a new setup for windows is done here.

2. Reinstalling  drivers

After rebooting windows if you are not able to solve the error Driver irql not less or equal  you should reset your drivers by following the process given below.

  1. To bring up Run Box press the .windows key on and R keys simultaneously on your keyboard.
  2. after that paste devmgmt.msc it will open the device manager window on your screen.
  3. Select network adapter in device managers, to uninstall right click on the network device. confirm it by hitting on ok.
  4. Restart your computer for the completion of the uninstalling drivers.
This process should be done in safe mode.

Now check that error of your system is solved or not if not then you can try solving it by updating drivers.there are two options for updating drivers, If you are a tech expert you can update it manually or not than opts for driver easy.turn on safe mode with internet and download driver easy on your system

  1. After completing the process downloading and installing the driver easy start the scanning process by hitting on the scan button on the driver’s easy window.
  2. Your system will be scanned to find out any defect in the driver and all facility derived will be marked you have to click on update to download a compatible version of them. you can also click on update all to simplify the task.
  3. It will automatically install the most suitable drivers for your system

It has a paid version and trial version you can also install the correct driver by the free version of drive easy.

3. Update Drivers

Sometimes drivers are harmonious but this error is occurring because drivers are in their outdated version. There is a need to download the latest version for the best performance without any trouble. We can try to solve this “Driver irql not less or equal” error by using this method, to update the driver  follow the given instruction.

  • Power on your pc and click on the file explorer
  • A list of programs will be on the left side of your screen, proceed further click on the PC.
  • Hitting on the Pc will open a list of command there will be an option Manage, click on it
  • It will lead to the option go to the system tool and click on the device mange.
  • For updating the driver you have to right-click on disk derive, hit on update derive
  • For confirmation that trouble is solved or not restart your computer.

4. Solving faults related to RAM

after trying the solutions given above, you are still facing a screen of blue death, you should also check RAM to find out any defect or fault. you can easily check RAM for any default by Windows memory diagnostic.

  • Go to the search box and enter window +R, memory diagnostic related all options will be on screen
  • For further process hit on Windows memory diagnostic.
  • There will be restart and check for problems now and other options check for problems next time, click on 1st option.
  • The computer will take a while for detecting the memory-related errors, If there is any fault or defect in the memory of your system that will find out by this automatically.

5. Hardware Troubleshooter Can solve error

IRQL_NOT_LESS_OR_EQUAL error might be the result of the faulty hardware of pc it can be identified with the help of a troubleshooter program. You can easily use this program by following the given information.

  1. Go to the start menu select settings to proceed.
  2. Hitting on a setting will lead you to a list of options select  Update and security.
  3. Hit on hardware and devices  from the troubleshooting option
  4. Click on hardware troubleshooter

It will start scanning your computer for any hardware defaults, after finishing the process of scanning list of faults will be on your screen. You can choose the default you wish to rectify.

6. Uninstall Malware

IRQL_NOT_LESS_OR_EQUAL error is the result of the installation of infected software to your system. To solve the error in your system, detection and remove these types of program files is necessary procedure if installing infected software is given below

  • Open the start menu and hit on the setting.
  • Hitting on a setting will one list, from there select apps.
  • Click on the 1st option apps and features from the list of all available options.
  • You need to sort downloaded software according to date and select infected software.
  • Uninstall it by clicking on the uninstall option.

7. Temperature control for Driver irql not less or equal error

When we work on a computer its temperature rises, which is control by the fan in the CPU. Access production of heat results in error in computer efficiency. Sometimes this heat is not managed by the CPU fan .the we need to take some measure to control the temperature of pc.

Check the fan of the CPU is properly working or not, if not then replace it.IF required add an additional fan for controlling CPU temperature. Timely maintenance and servicing of the CPU fan


some time resting a computer might help you to solve IRQL error. Resetting to original settings erase all unwanted files except your personal file.this is very easy, simple, and effective.

  1. Select settings from the start menu.
  2. Hit on update  and security  to process further,
  3. Click on getting started  for proceeding further

You can select if you want to keep your personal files or format pc completely.

9. Deactivation of Write Caching Policy 

“IRQL_NOT_LESS_OR_EQUAL “ problem is occurring due to write caching policy. It can easily be solved by deactivation by the following steps given below.

  • Go to the Disk drivers under device manager.
  • To see all option available their double click on disk drivers
  • A list of options will open there and pinpoint the option driver, right-click on it after t select properties click on it.
  •  option Enable write caching on the device should be unmarked and followed by OK to save it

10. Rectifying System by Restoring

If the error “IRQL_NOT_LESS_OR_EQUAL “is not being corrected by trying all the above-explained methods we can try to rectify it by restoring the system. Restoring the system will bring your system to the former state when it was working properly, you have to select the date when your system was functioning efficiently and follow the procedure of restoring the system.

  • ON your keyboard there I a key with windows symbol press it all together with Rkey
  • A dialogue box will open type rstrui.exe and hit on ok or press enter.
  • this process will lead to open a new window, system restore wizard hit on next,
  • here options about date and time will be available choose date and time followed by ok.
  •  hit on Finish For completion of the process and wait for a while when your system is restoring ,.


Firstly you have to enter into safe mode for this particular solution

1. Press the F8 key  to enter Safe Mode 

Then you need to choose to Repair My Computer >

You can see  Advanced Options In Troubleshoot;

Enter Command Prompt in Troubleshoot

2. After you will select Command Prompt On that screen you need to  type These given  commands to find the root directory:

dir C:\Win* then enter
dir D:\Win* again Enter;
dir E:\Win* click Enter;

3. After this process you have to Type:
cd /d C:\windows\System32\config

Then click enter
xcopy *.* C:\RegBack\

again click enter
cd RegBack 


Click enter

4. At last you have to give these command
copy /y software…
copy /y system
copy /y sam

At the last reboot computer, Hopefully, the registry error will be manually fixed and repaired.


irql_not_less_or_equal error can be  Due to File corruption issues That you can solve by repairing your registry. You can easily  do that is by using the System File Checker command in CMd:

1. For this process you have to go to the Start menu and type cmd, then right-click Command Prompt and from the given options select Run as Administrator

2. In Cmd type the SFC /scannow command

3. The scanning process will automatically begin then you have to wait to complete

4. at last restart your computer.

5. All the corrupted files will be replaced properly on reboot.

13. Run Driver Verifier

There are Some methods to solve and correct Driver irql not less or equal is not complicated There is some method that can be used by anyone to solve IRQL error but some methods are not easy but complicated that should be used with the help of technology experts.  run Driver Verifier method should be used in SAFE MODE.

You should always restore system before running this.

Step 1: In the start, menu select  cmd in the search box then click run as administrator

Step 2: click the verifier in the Cmd window and press Enter.

Step 3: Now you have to  choose to Create standard settings 

Step 4:  Click Next to continue.

Step 5: Now choose the drivers to verify and then Hit the Next button.
Step 6:  select drivers to verify and click Finish.
Step 7: Restart your computer if this method doesn’t work, then you can try something else.


There are several factors that affect the efficiency and performance of the computer. For solving errors we should always consider the reason behind the error. It will provide how to solve that error, without understanding the reasons It is difficult to solve any problem. In this article we have discussed general ways to solve”Driver irql not less or equal” error, after applying all the methods we have discussed above in the article, you are unable to correct error IRQL you should take the help of a computer expert.

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