DRIVER_IRQL_NOT_LESS_OR_EQUAL: Stop error on Windows
Most likely cause: Faulty or incompatible driver, often graphics, network, or storage related
Try first: Restart and note any recent changes
Likely causes
- Faulty or incompatible driver, often graphics, network, or storage relatedmost likely
- Corrupted system files or recent driver update gone wrongpossible
- Hardware issue such as faulty RAM or overheatingless likely
How to fix it
Restart and note any recent changesSafe
Restart the PC and think about what changed recently like new software, drivers, or hardware. This helps identify the trigger.
Boot into Safe ModeSafe
Restart while holding Shift, then choose Troubleshoot > Advanced options > Startup Settings > Restart and select option 4 or 5 for Safe Mode. This loads with minimal drivers to test if the error stops.
Run memory diagnosticSafe
Search for Windows Memory Diagnostic, choose Restart now and check for problems. This tests RAM without installing anything.
Update drivers via Device ManagerChanges settings
In Safe Mode or normal mode if possible, right-click Start > Device Manager, expand categories like Display adapters, right-click devices and choose Update driver.
If that didn't fix it
Boot from a Windows installation USB, open Command Prompt from repair options, and run chkdsk /f /r on the system drive.
When to see a technician
Take the PC to a technician if the error returns after driver checks or if hardware tests show failures.
Quick answers
- What does DRIVER_IRQL_NOT_LESS_OR_EQUAL: Stop error on Windows mean?
- This is a Windows blue screen error that happens when a driver tries to access memory at the wrong processor level, usually pointing to a problem with a device driver.
- What causes DRIVER_IRQL_NOT_LESS_OR_EQUAL: Stop error on Windows?
- Faulty or incompatible driver, often graphics, network, or storage related. (most likely) Corrupted system files or recent driver update gone wrong. (possible) Hardware issue such as faulty RAM or overheating. (less likely)
- How do I fix DRIVER_IRQL_NOT_LESS_OR_EQUAL: Stop error on Windows?
- Try these in order, safest first: 1. Restart and note any recent changes. 2. Boot into Safe Mode. 3. Run memory diagnostic. 4. Update drivers via Device Manager.
- What if that didn't fix it?
- Boot from a Windows installation USB, open Command Prompt from repair options, and run chkdsk /f /r on the system drive.
- When should I see a technician?
- Take the PC to a technician if the error returns after driver checks or if hardware tests show failures.