Question: how to fix error driver_irql_not_less_or_equal windows 10?
Answer: DRIVER_IRQL_NOT_LESS_OR_EQUAL (error code 0x000000D1) is a stop error Windows users recently came around after the Windows 10 upgrade or the Windows 10 anniversary update. ... 
Click Scan to detect the problematic drivers.
Click Repair or Update to fix driver issues.