By skyforbes 
Issue: Driver irql_less_or_not equal error when connecting to a wireless display while using both a wireless and an Ethernet connection.
The “IRQL_NOT_LESS_OR_EQUAL” error occurs when a driver or system process tries to access memory at an IRQL (Interrupt Request Level) that is too high. This means the process is operating at a priority level that doesn’t allow it to perform certain memory operations. For example, if a driver running at a high IRQL attempts to access pageable memory, it can lead to this error.
This error typically occurs due to several reasons, including:
- Faulty RAM
- Obsolete system drivers
- Missing or corrupt system files
- Conflicting programs
Disconnect all non-essential peripherals such as USB drives, printers, or external hard drives, then restart the computer to rule out hardware conflicts causing the error.
Run Memory Diagnostics
Since this error often relates to memory issues, running a diagnostic on your system’s RAM is a good first step. You can use the Windows Memory Diagnostic tool to check for any issues with your RAM.
Press Windows key + x and search for “Windows Memory Diagnostic,” selecting it, and choose the “Restart now and check for problems option.
The system will restart and perform a test, reporting any memory issues found
Use DISM and SFC Scan
Corrupted system files can trigger this error. Using the DISM and SFC tools can help repair these files. Open the Windows Terminal (Admin) and run the following commands:
DISM /Online /Cleanup-Image /RestoreHealthSFC /scannow
Update or Roll Back Drivers
Problematic drivers are a common cause of this error. You may need to update outdated drivers or roll back recently updated ones. Open Device Manager, locate the component category for the suspected problematic driver, and either update or roll back the driver.
Troubleshoot Your System in the Clean Boot State
Conflicting software can cause the “IRQL_NOT_LESS_OR_EQUAL” error. Reboot your system in the Clean Boot state to identify the problematic software. This can be done through the System Configuration window (msconfig).
Malicious software can disrupt system operations and trigger the error. Run a full system scan using Windows Defender or a trusted third-party antivirus program.
If other methods fail, reset the PC through Settings > System > Recovery, choosing to keep files or remove everything, which can resolve persistent system errors.
Source: https://windows101tricks.com/irql-not-less-or-equal-windows-11/