Driver Irql Not Less Or Equal. The DRIVER_IRQL_NOT_LESS_OR_EQUAL error is a BSoD error that occurs when your network driver uses an incorrect memory address. If this is the first time you've seen this Stop error screen, restart your computer.
As it happens, the DRIVER IRQL_NOT_LESS_OR_EQUAL error is quite common, especially when gaming, or during high performance is needed. IRQL_NOT_LESS_OR_EQUAL means one of two things: driver issues, or a bad Windows Service caused by a backup utility or antivirus scanner. If this is the first time you've seen this Stop error screen, restart your computer.
TIP: In some cases, error Driver.
This is a similar, but different error to the previous one we discussed, KMODE_EXCEPTION_NOT_HANDLED, so much of this guide will be familiar.
You may also see "ndis. sys" on the screen. "ndis. sys" is a system file of network drivers. IRQL_NOT_LESS_OR_EQUAL means one of two things: driver issues, or a bad Windows Service caused by a backup utility or antivirus scanner. As it happens, the DRIVER IRQL_NOT_LESS_OR_EQUAL error is quite common, especially when gaming, or during high performance is needed.