By john 
The IRQL_NOT_LESS_OR_EQUAL blue screen indicates that a driver or system process tried to access memory it should not have. In Windows 11 this is almost always a driver issue, though faulty RAM can produce the same stop code.
A blue screen can be alarming, but it is Windows protecting itself by stopping before any deeper damage occurs. The specific stop code is a valuable clue: it narrows down whether the problem lies with a driver, system files, memory, or another component. Noting the exact code, and any file name shown on the screen, makes Rajatoto88 the troubleshooting below far more targeted and effective.
Common Causes
Before applying a fix, it helps to understand why this happens. Identifying the likely cause lets you go straight to the most relevant solution instead of trying everything at random. The most frequent causes are:
- A faulty or incompatible device driver
- Corrupted system files
- Defective or mismatched RAM
- Overclocking instability
How to Fix It: Step by Step
Work through these steps in order, starting with the simplest. In most cases one of the earlier steps resolves the problem, so there is no need to continue once it is fixed:
- Boot into Safe Mode to confirm whether a third-party driver is responsible.
- Update all drivers, prioritizing network, graphics, and storage drivers, through Device Manager or vendor websites.
- Roll back any driver updated just before the crashes started.
- Run Windows Memory Diagnostic to test for faulty RAM.
- Run sfc /scannow and DISM to repair corrupted system files.
If the Problem Persists
If updating drivers does not help, removing recently installed hardware or reverting overclock settings often resolves the error. Note any driver name shown on the blue screen, as it points directly to the culprit.
How to Prevent It in the Future
To reduce the chance of this stop error returning, keep your drivers current by checking the websites of your GPU, motherboard, and storage manufacturers periodically rather than relying on Windows Update alone. Avoid running unstable overclocks for everyday use, and monitor component temperatures so heat is never the underlying trigger. Maintaining a recent System Restore point and a separate file backup means that even a sudden blue screen never costs you data, since you can roll the system back to a known-good state and continue working with minimal disruption.
Final Thoughts
Issues like this are common in Windows 11 and rarely mean your PC is failing. Working methodically from the simplest fix to the more involved ones is the fastest way to resolve them while avoiding unnecessary changes to your system. If none of the steps above resolve the issue, it is worth checking Microsoft’s official support pages or community forums, since a recent update may have introduced a known problem that Microsoft is actively working to fix. In that case, waiting for the next patch, or temporarily rolling back the change that caused it, is often the most sensible course of action.