Irql not less or equal stop code means that there was an issue in Windows which caused the system to crash and result in displaying the blue screen. This issue usually relates to incorrect memory access and could be caused by drivers or software issues, bad memory, or even wrong hardware components. You should start your troubleshooting with the analysis of the drivers and updates installed on your computer lately. Besides, you can check memory and perform a scan for corruption of the Windows system files. If you still experience the issue, you will find helpful information about the time of occurrence of the blue screen.
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