Share this article
This article is translated in
Improve this guide
Irql Not Less or Equal in Windows 11: How to Fix it
Use the built-in repair feature and check your memory to fix this issue
5 min. read
Updated onMarch 28, 2024
updated onMarch 28, 2024
Share this article
This article is translated in
Improve this guide
Read our disclosure page to find out how can you help Windows Report sustain the editorial teamRead more
Fix all BSoD events and keep computer safe and clean:
Fortect will find the cause of BSoD and fix it. Here is how to do it with 3 easy steps:
Many users encountered driver irql_less_or_not_equal on Windows 11, and this issue will force your PC to crash, so it’s important to know what causes it and how to fix it.
What causes the IRQL_NOT_LESS_OR_EQUAL error in Windows 11?
In most cases, this issue is caused by driver issues, but sometimes corrupted system files can lead to this issue. Faulty RAM can also cause this problem and in some rare cases, third-party software can be responsible.
How do I fix the IRQL_NOT_LESS_OR_EQUAL BSoD error?
1. Use the Startup Repair
- Click theStarticon from yourTaskbar, click thepowerbutton, hold down theShiftkey, and selectRestart.
Alternatively, you can createa bootable media for Windows 11and start your PC with it.
- SelectTroubleshoot.
3.Click onAdvanced options,then chooseStartup Repair.
-
If the system detects any problems, it will attempt to solve them. If it doesn’t find any, you will receive the message thatStartup Repair couldn’t repair your PC.
-
Click on theAdvanced optionsbutton.This will bring you back to the main screen.
6.Select againTroubleshoot, thenAdvanced options, and in the new window click onStartup Settings.
7.Now click onRestartto start the PC inSafe Mode.
8.From the previous menu, you also have the option to selectUninstall Updatesand roll back any recent updates if you suspect that they caused this issue.
Or you can chooseSystem Restoreand roll back your system to a previous point in time before this error occurred.
- Once the PC restarts, press the4orF4key on your keyboard to enterSafe Mode. If the issue is gone, that basically means that a third-party app is causing this issue and you need to uninstall it.
The built-in Startup Repair tool on your PC is likely to solve the IRQL_NOT_LESS_OR_EQUAL error without you having to try out other more complicated solutions.
2. Check the memory on your PC
Since the IRQL_NOT_LESS_OR_EQUAL startup error in Windows 11 can be caused by some problems with the memory, it’s important touse the dedicated Windows Memory Diagnostic Toolto get a reading on your modules.
3. Update, uninstall or rollback your drivers
We demonstrated this procedure on the Network Adapter driver because it’s more likely to cause this error but you should update all drivers.
Driver management can be tiresome and time-consuming, but it is always a good idea to employ the help of a third-party driver updating software to help you out. A professional driver updater can scan your system and identify any missing, corrupted, or out-of-date drivers, then you will be prompted to download new versions for them.
⇒Get PC HelpSoft Driver Updater
4. Run the SFC scan
5. Check the drive for errors
6. Scan your PC for viruses
In this solution, we showed you how to perform an offline scan using Microsoft Defender but if you have athird-party antivirus, you can use it instead.
7. Reset your PC
How to check the system stability in Windows 11?
In case you getIRQL_NOT_LESS_OR_EQUAL error in Windows 10or a variation in the form ofl1c63x64.sys BSoD error, we covered some compressive solutions to solve it safely and fast.
We also have a guide onIRQL_NOT_LESS_OR_EQUALerror, so don’t miss it for more general solutions. Sometimes certain files can cause this issue, such as the case withDriver irql not less or equal (mfewfpk.sys)error.
For any suggestions or questions we wait for your input in the comments section below and we will get back to you as soon as possible.
More about the topics:BSoD error codes,Windows 11
Claudiu Andone
Windows Toubleshooting Expert
Oldtimer in the tech and science press, Claudiu is focused on whatever comes new from Microsoft.
His abrupt interest in computers started when he saw the first Home Computer as a kid. However, his passion for Windows and everything related became obvious when he became a sys admin in a computer science high school.
With 14 years of experience in writing about everything there is to know about science and technology, Claudiu also likes rock music, chilling in the garden, and Star Wars. May the force be with you, always!
User forum
2 messages
Sort by:LatestOldestMost Votes
Comment*
Name*
Email*
Commenting as.Not you?
Save information for future comments
Comment
Δ
Claudiu Andone
Windows Toubleshooting Expert
Oldtimer in the tech and science press, with 14 years of experience in writing on everything there is to know about science, technology, and Microsoft
