IRQL_NOT_LESS_OR_EQUAL - Windows Blue Screen Errors Explained [Part 1]

IRQL_NOT_LESS_OR_EQUAL

IRQL_NOT_LESS_OR_EQUAL

Explanation

IRQL - Interrupt Request Level

Operating system reserve / protect memory for OS important task(s). this error message occurs when some program attempted to access a memory address to which it did not have permission to access. it might be caused by a user device driver, a system service, or a virus scanner that is incompatible with the new windows version.

What action(s) we can take

Since device drivers has to access this kind of memory since device drivers communicating with operating system, this error can identify as driver issue. this error can occur when device diver incompatibility with operating system, to resolve issue try updating device drivers or rolling back drivers to previous version.

This issue also can happen in device it self, for an example overclocking the graphic card cause to this error. by turning devices to it's normal / default state  may be resolve the issue.

if this error occurs after installing a new hardware device you should update drivers instead remove device, else you may remove the new device if this error occurs continuously. some device manufactures provides hardware diagnostics tool, if you not sure which device cause to this error you should run hardware diagnostics supplied by the system manufacturer, especially the memory scan. finally check the cables and the SCSI IDs of each device, and confirm proper termination. 

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