Meta Description:
Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL BSOD error on Windows 10/11 with proven solutions. Step-by-step guide for beginners and advanced users.
What Is DRIVER_IRQL_NOT_LESS_OR_EQUAL?
The DRIVER_IRQL_NOT_LESS_OR_EQUAL error is a Blue Screen of Death (BSOD) that happens when a driver tries to access invalid memory at a high interrupt request level (IRQL).
This usually indicates a faulty, incompatible, or corrupted driver.
Symptoms
- Sudden blue screen crash
- System restarts automatically
- Error appears during gaming or heavy usage
- Random freezes before crash
Main Causes
- Corrupted or outdated drivers
- Network driver issues (very common)
- Faulty RAM
- Antivirus conflicts
- Overclocking
How to Fix DRIVER_IRQL_NOT_LESS_OR_EQUAL
Follow these methods carefully:
1. Update Network Drivers (Most Important Fix)
This error is often caused by network drivers.
Steps:
- Press
Windows + X→ Device Manager - Expand Network adapters
- Right-click → Update driver
👉 Related article:
DRIVER_POWER_STATE_FAILURE Fix/how-to-fix-driver_power_state_failure-blue-screen-in-windows-complete-guide/
2. Roll Back Problematic Drivers
If the error started after updating drivers:
- Open Device Manager
- Right-click device → Properties
- Go to Driver tab → Roll Back Driver
3. Run System File Checker
Open Command Prompt (Admin):
sfc /scannow
Then:
DISM /Online /Cleanup-Image /RestoreHealth
👉 Related article:
SYSTEM_SERVICE_EXCEPTION Fix/how-to-fix-system_service_exception-blue-screen-in-windows-complete-guide/
4. Disable Third-Party Antivirus
Some antivirus programs conflict with drivers.
- Temporarily disable antivirus
- Restart your PC
5. Check RAM Issues
Run memory diagnostic:
- Press
Windows + R - Type
mdsched.exe - Restart and scan
👉 Related article:
MEMORY_MANAGEMENT Fix/how-to-fix-memory_management-blue-screen-in-windows-complete-guide/
6. Update Windows
Go to:
Settings → Windows Update → Check for updates
7. Reset Network Settings
Steps:
- Open Settings
- Network & Internet
- Click “Network reset”
8. Disable Overclocking
If overclocking is enabled:
- Reset BIOS to default
- Disable XMP
Advanced Fix
Update BIOS
- Visit motherboard official website
- Download latest BIOS
- Follow instructions carefully
⚠️ Only for advanced users.
Prevention Tips
- Keep all drivers updated
- Avoid installing unknown drivers
- Use trusted antivirus
- Do not overclock excessively
Conclusion
The DRIVER_IRQL_NOT_LESS_OR_EQUAL error is mainly caused by driver issues, especially network drivers.
Start with:
- Updating drivers
- Running system scans
- Checking RAM
These steps fix the majority of cases.