How To Fix ‘Driver irql not less or equal’ Error in Windows 10: Windows 10 is available as a free update for all genuine users of Windows 8 and Windows 7, however, the upgrade process to Windows 10 does not always go smoothly, and some users report a driver_irql_not_less_or_equal (mfewfpic.sys) error.
Driver_irql_not_less_or_equal (mfewfpic.sys) is usually followed by a blue screen of death, after which your computer reboots. This error is caused by the mfewfpic.sys file associated with McAfee Security Software, and usually the best solution is to uninstall McAfee security software before upgrading to Windows 10. If you have already upgraded to Windows 10, don’t worry. There is still a way to fix this. a problem.
How to fix Driver_irql_not_less_or_equal (mfewfpic.sys) error in Windows 10
Driver_irql_not_less_or_equal is a blue screen of death error that could cause your computer to crash and reboot. There are many variants of this error that are most often reported:
- Driver_irql_not_less_or_equal (mfewfpk.sys) is just a variation of this error, and sometimes the problem can be caused by mfewfpk.sys. However, you can solve this problem using one of our solutions.
- The driver is not less than or equal to mfewfpk sys Windows 8 . This error may appear in other versions of Windows. Many Windows 8 users have reported this issue, but you can fix it simply by moving or deleting the problem file.
- The driver is not less than or equal to mfewfpic.sys BSOD – . This is a BSOD error, usually caused by McAfee. To fix the problem, simply uninstall McAfee and see if this solves the problem.
- The irql driver is not less than or equal to tcpip.sys, rtwlane.sys, nvlddmkm.sys, netio.sys – sometimes other files can cause this problem. This type of problem is usually caused by outdated drivers, so be sure to update them.
- The driver is no less than or equal to overclocking . Your overclocking settings can sometimes cause this problem. However, you can easily solve the problem by deleting the overclocking settings.
- Driver no less than or equal to crash, blue screen . If this error occurs, your computer usually crashes and displays a blue screen. However, you should be able to solve the problem using one of our solutions.
Solution 1 – Remove McAfee
To do this, you need to download and run the McAfee removal tool. You can download it here. Once you have downloaded the tool, you just need to run it and it will completely remove McAfee Security Software from your computer. If you get Blue Screen of Death with a driver_irql_not_less_or_equal error (mfewfpic.sys), then you probably will not be able to access Windows 10 and download the McAfee removal tool, so you will have to run Windows 10 in safe mode.
- READ ALSO: Fixed: BSOD caused by “automatic reinforcement of kernel lock with increased IRQL”
To start Windows 10 in safe mode, you usually need to restart your computer from Windows 10 while holding down the Shift button, but since this is not an option, you can try the following:
- While the computer is loading, continue to press F8 or F2 or Shift + F8 . This sometimes allows you to access advanced download options. As we already mentioned, this will not always work, but after restarting the computer several times you will get the opportunity to restart the computer or enter the advanced launch. When this happens, make sure you select Advanced Startup.
- Then select Troubleshoot .
- Then you need to go to Advanced Settings> Launch Options .
- When you enter the launch option, you will have the Safe Mode option with a network connection . Select it and download the McAfee removal tool from the link above.
- Run the McAfee removal tool to completely remove McAfee software.
- Reboot the computer. After uninstalling McAfee Security Software, everything should work as usual.
If the problem is resolved after uninstalling McAfee, you may want to continue using Windows Defender or switch to another anti-virus solution. Windows Defender provides reliable protection, but if you need complete system protection, you may need to install third-party antivirus software.
There are many great antivirus tools on the market, but at present the best ones are Panda Antivirus , BullGuard and Bitdefender . All of these tools are fully compatible with Windows 10 and provide the best protection, so you can try any of them.
Solution 2. Move the problem file to another directory.
In most cases, this problem is caused by mfewfpic.sys, and to solve it you need to find and move the file to another location. This file is located in the Windows directory, but it is not critical for Windows, so it can be easily moved. To do this, simply follow these steps:
- Launch Windows 10 in Safe Mode . To see how to do this, be sure to check out the previous solution for detailed instructions.
- When starting safe mode, open Explorer and go to the C: \ Windows \ System32 \ drivers directory .
- Now find the mfewfpk.sys file and move it to another location outside the Windows directory.
After that, restart the computer and the problem should be completely resolved. Keep in mind that this is not a system file, so you can also delete it if you want.
- See ALSO: Fixed: system_scan_at_raised_irql_caught_improper_driver_unload error
Solution 3 – Use a Linux boot disk
If the driver_irql_not_less_or_equal error (mfewfpic.sys) does not allow Windows to start, you can solve the problem by simply booting from the Linux boot disk. To create a Linux boot disk, you boot the Linux ISO onto a working PC and then create a boot disk using Rufus or any other similar tool.
After that, you need to connect the boot disk to your PC and boot from it. After starting the computer under Linux, you need to find the directory C: \ Windows \ System32 \ drivers and move or delete the mfewfpk.sys file . Keep in mind that under Linux, your drive cannot be marked as C, so you have to find the Windows directory yourself.
This is a slightly advanced solution, so if you don’t know what an ISO file or Linux is, and if you don’t know how to create a boot disk, you can read one or two tutorials or try another solution. ,
Solution 4. Use the command line to delete the file
According to users, you can easily solve this problem simply by using the command line. To do this, you must first start Windows 10 in safe mode. To see how to do this, be sure to check out some of our previous solutions. After entering safe mode, you need to run the command line by following these steps:
- Right-click “Start” button or press the key + the X the Windows . Now select Command Prompt (Admin) or PowerShell (Admin) .
- At the command prompt, run the following command: DEL / F / S / Q / A “C: \ Windows \ System32 \ drivers \ mfewfpk.sys .
This command will force Windows to delete this file. After that, just restart your computer and see if the problem is resolved.
Solution 5 – Run CCleaner in Safe Mode
If you get Driver_irql_not_less_or_equal (mfewfpic.sys) error, you can fix it by running CCleaner in safe mode. If you are not familiar, CCleaner is a great tool that can delete unnecessary files and registry entries. However, this application can also fix many problems on your computer.
- Download CCleaner Free
To solve this problem, many users are advised to enter safe mode, download CCleaner and run it. Once you run it, scan for problems and scan the registry. Keep in mind that you need to repeat the scan until no problems are found.
After that, restart the computer and check if the problem is resolved. Several users reported that CCleaner managed to solve the problem for them, so be sure to give it a try.
- READ ALSO: [Fixed] irql_not_less_or_equal BSOD on Windows 10, 8.1 or 7
Solution 6 – Perform System Restore
If Driver_irql_not_less_or_equal (mfewfpic.sys) error recently occurred, you can fix the problem by performing System Restore. If you are not familiar, System Restore is a useful feature that allows you to restore your PC to its previous mode of operation and eliminate many problems.
Since you do not have access to Windows, you can start System Restore from the Advanced boot menu by following these steps:
- Restart the computer several times during boot to force the computer to boot in order to start automatic recovery.
- A list of options will appear. Select Troubleshooting> Advanced Settings> System Restore .
- Now select your username and enter your password.
- The System Restore window should now appear . Click Next to continue.
- If available, select the Show more recovery points check box. Now you should see several available recovery points. Check the date and time for each entry and select the desired restore point. Now click Next .
- Follow the on-screen instructions to restore your computer.
After system recovery, your computer must be restored to an earlier state, and the problem must be completely resolved. Keep in mind that this is not an ideal solution, and sometimes even system recovery will not be able to solve your problem.
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Solution 7: Use the Windows 10 installation media for automatic recovery
If you cannot load Windows 10 due to Driver_irql_not_less_or_equal (mfewfpic.sys) error, you can fix it by doing an automatic recovery. Before we get started, you need to download Windows 10 ISO using the Media Creation Tool and create a boot disk. You can do this from safe mode or from a working computer. After creating the boot disk, do the following:
- Connect the boot disk to the computer and boot from it. To boot from a USB drive, you may need to change the boot settings in the BIOS.
- After booting from the boot disk, click Restore computer .
- Now select Troubleshoot> Advanced options> Automatic recovery .
The automatic recovery process will begin. This process may take 10 minutes or more, so do not turn off the computer. Once the repair process is completed, check if the problem is resolved.
I hope these solutions helped you with the Driver_irql_not_less_or_equal (mfewfpic.sys) error, if you have any questions or comments, just refer to the comment below.This post was originally published in November 2018 and has since been completely redesigned and updated to ensure freshness, accuracy and completeness.