Irql-not-less-or-equal: When Installing Windows 10

The "IRQL Not Less or Equal" error is a type of BSOD that occurs when the Windows operating system encounters a critical error that prevents it from running. The error message is usually displayed on a blue screen, and it can be caused by a variety of factors, including hardware or software issues. The IRQL (Interrupt Request Level) is a priority level assigned to interrupts in a computer system. When the IRQL is not less or equal to the required level, the system may crash, resulting in the "IRQL Not Less or Equal" error.

Some low-quality USB drives fail during the heavy read/write operations of an install. 3. Adjust BIOS/UEFI Settings irql-not-less-or-equal when installing windows 10

Windows setup may struggle if it encounters unexpected hardware or peripheral drivers it doesn't recognize yet. The "IRQL Not Less or Equal" error is

Since you cannot boot into Windows, you need a second PC: When the IRQL is not less or equal

If you encounter the "IRQL Not Less or Equal" error when installing Windows 10, try the following troubleshooting steps: