How to fix Windows stop code irql_not_less_or_equal?
1. Start your computer in Safe Mode
2. Check your memory and hardware
Open the Search charm > type in Memory Diagnostic and open the Windows Memory Diagnostic utility.
In the new window which opens, select one of the two options available. The first one will restart Windows immediately and let the system scan the RAM.
If it will return an error, then you have your answer. Replace the RAM of your computer and everything should be working properly.
On the other hand, if the scan didn’t return any errors, then the problem resides elsewhere.
Optional: If your motherboard’s BIOS has the Memory Caching feature, then you should disable this feature. Keep in mind that operating in the BIOS environment can be dangerous, so do not attempt to modify other settings if you don’t know what they do.
Check your disk for errors
Speaking of corrupted files and errors, your disk may also trigger the irql_not_less_or_equal error. If you already applied the first solution listed in this guide, and checked your RAM, try checking your disk as well.
On Windows 10, you can quickly run a disk check using Command Prompt.
Start Command Prompt as administrator and type the chkdsk C: /f command followed by Enter. Replace C with the letter of your hard drive partition.
As a quick reminder, if you do not use the /f parameter, chkdsk displays a message that the file needs to be fixed, but it does not fix any errors.
The chkdsk D: /f command detects and repairs logical issues affecting your drive. To repair physical issues, run the /r parameter as well.
On Windows 7, 8.1 , go to hard drives > right-click the drive that you want to check > select Properties > Tool. Under the ‘Error checking’ section, click Check.
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