When encountering the "IRQL_NOT_LESS_OR_EQUAL" blue screen error, it is usually caused by driver permission problems or memory failures. It can be solved by the following methods: 1. Update or rollback the driver, especially high-frequency interactive devices such as graphics cards and network cards; 2. Use Windows built-in memory diagnostic tools to check RAM problems, and unplug memory tests if necessary; 3. Uninstall third-party anti-virus or optimization software, such as 360, Master Lu, etc.; 4. Run the sfc /scannow and DISM commands to repair system files. Most cases can be solved by checking drivers and memory first.

When encountering the blue screen error "IRQL_NOT_LESS_OR_EQUAL", many people's first reaction is that the system is broken or the hardware is wrong. In fact, although this problem seems scary, it can often be solved through some conventional means. The core reason is that the driver's permissions are incorrect when accessing memory. To put it bluntly, it is "touch when it shouldn't be touched." Here are some common methods of handling, try it in order, and it can be done in most cases.

Update or rollback the driver

This is the most common solution. Because IRQL errors are usually related to drivers, especially devices such as graphics cards, network cards, and sound cards that frequently interact with the system.

• Open "Device Manager" and find the recently updated devices (especially display adapters, network adapters, etc.)
• Right-click to select "Update Driver" or "Rolleate Driver"
• If you are not sure which one has a problem, you can try to troubleshoot one by one and give priority to checking the graphics card driver (NVIDIA/AMD/Intel is often present)

Sometimes the driver that is automatically updated is incompatible with the current system. It will be more stable to manually install the recommended version of the official website at this time.

Check for memory issues (RAM)

This error may also be caused by physical memory problems. Windows has a built-in memory diagnostic tool that can be run directly:

1. Press Win R and enter mdsched.exe to enter
2. Select "Restart now and check for issues"
3. After the system restarts, it will automatically detect whether there is any abnormality in the RAM.

If you find memory problems, you can try unplugging a memory stick and testing (if it is dual channel), or change the slot to see if it improves.

Uninstall third-party antivirus software or system optimization tools

Many users do not realize that certain security software or optimization tools (such as Master Lu and Tencent Computer Manager) will operate at the kernel level, which is prone to conflicts.

• Go to Control Panel > Programs and Features
• Find software like 360, Kaspersky, CCleaner, etc. and uninstall them one by one
• After restarting, check if there is still a blue screen

If you have this problem just after installing a certain software, you can basically be sure that it is caused.

System file corruption repair

If all the above is OK, the system file itself may be corrupted. You can execute the following commands using the command prompt:

• Open a command prompt as administrator (CMD or PowerShell)
• enter:
  • sfc /scannow
  • DISM /Online /Cleanup-Image /RestoreHealth

These two commands are used to scan system files and repair system images respectively. Restart after completion to see if the problem is solved.

Basically these common ways of dealing with it. Not particularly complicated, but it needs to be done step by step. In most cases, the problem lies in the driver or memory, so it is most effective to start with these two aspects.

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