DRIVER_IRQL_NOT_LESS_OR_EQUAL Error 0x000000d1

In most cases, this error occurs due to incompatible drivers or faulty devices. In technical terms, it indicates a page-able memory was accessed by a kernel-mode driver at a higher IRQL process.

Download the Diagnostic

There are certain situations when missing entries in your registry and registry corruption causes this problem. Try running a registry scan to identify if there are any such issues.

1. Click the button below to download and install the Diagnostic
2. Perform a Registry scan and fix any problems detected.
3. Restart your computer.

Estimated Download Time: 10 Seconds

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Update your Drivers

Drivers control functioning of hardware devices attached to your computer such as DVD-ROM, printer, scanner, network card, and so on. It essentially converts the input/ output instructions to a readable message. Your drivers may be obsolete. Try updating them.

1. Press Windows Key + X simultaneously.
2. Select Device Manager.
3. Expand the top node.
4. Right-click a device you’d like to update.
5. Select Update driver software.

Rollback Drivers

If you’re encountering this error after updating your drivers, consider rolling them back.

1. Open the Device Manager.
2. Expand the top node, and right-click a driver you’d want to rollback.
3. Select Properties.
4. Click the Driver tab > Roll back.

Remove Faulty Hardware

If you’re encountering this error after connecting a new hardware to your computer, disconnect it. The hardware may be faulty or not compatible with the version of Windows installed on your computer. 

Restore your System

System Restore helps fixing a mis-configured computer. Every time something goes wrong with your system settings, program files or Windows components, you may simply rollback your computer to a prior state.

1. Press Windows Key + R.
2. Type rstrui.exe and click OK.
3. Restore system files and settings page will open up.
4. Click Next.
5. To show additional restore points, check-up Show more restore points box.
6. Select a restore point prior to the error message.
7. Click Next.
8. Follow the on-screen instructions.

Check for Memory Problems

Windows has a built-in utility simple diagnostic tool, mdsched.exe, to check for memory problems that are known to cause this error.

1. Type Memory in the Search Box on your Taskbar.
2. Open the Windows Memory Diagnostic from the Search Results.
3. Click Restart Now and Check for Problems.
4. Your computer will reboot and schedule several memory tests at the pre-boot interval. You can extend the basic test for thorough results, in case no problems are initially found.

Set System-managed Paging File Size

When some programs take up too much of memory and the entire memory is exhausted, Paging File plays an important role. The virtual memory saves your computer from crashing, slowing down, and other critical system errors. Your computer is encountering issues because the paging file size is incorrectly set.

1. Right-click This PC icon on your Desktop.
2. Select Properties.
3. Click Advanced system settings.
4. Click the Advanced tab.
5. Click Settings under Performance.
6. Click Advanced tab.
7. Click Change.
8. Uncheck the box labeled Automatically manage paging file size for all drives.
9. Select No paging file option, and then click OK | OK | OK.
10. Restart your computer for the changes to take effects.
11. Repeat the Steps # 1-7 again.
12. Select System managed size option, and then click OK thrice.

Perform System File Scan

It’s possible that your system files have been corrupted. System File Checker, a built-in tool, might be able to help in this situation. It replaces corrupted system files with the correct versions stored on the Windows operating system installation disc.

1. Type Command Prompt in the Search Box on your Taskbar.
2. Right-click Command Prompt, select Run as Administrator.
3. Type and execute the following command:
   • Sfc/ scannow 

Scan your PC

Scan and destroy viruses that are known to cause this error. Make sure your Antivirus is up-to-date before conducting a full scan.

1. Open up your Antivirus and Antimalware software.
2. Update the virus definitions.
3. Perform full scan to check for viruses, malware, Trojan, adware.