How to Fix 0x000000D1 DRIVER_IRQL_NOT_LESS_OR_EQUAL Error in Windows

The 0x000000D1 DRIVER_IRQL_NOT_LESS_OR_EQUAL error in Windows occurs when a driver tries to access memory using an incorrect processor priority, leading to a critical error. Common causes include hardware issues, incompatible or corrupted drivers, and software conflicts. Here are some possible solutions:

1. Update Drivers

One of the most common causes of this error is driver issues. Here's what you can do:

  • Check device drivers. You can do this through the Device Manager. Open it by pressing Win + X and selecting the appropriate option, then check if all drivers are up to date.
  • Manually update drivers. Visit the hardware manufacturers' websites to download the latest drivers. Pay special attention to your graphics card, network adapters, and sound cards.

2. Check for Windows Updates

Some errors can be resolved by regularly updating the operating system.

  • Open Settings → Update & Security → Windows Update and make sure all updates are installed.

3. Check Your RAM

RAM (Random Access Memory) could be the issue if it's damaged or malfunctioning.

  • Use the built-in Windows Memory Diagnostic tool. Open it by typing "Windows Memory Diagnostic" in the search bar and follow the instructions to test your RAM.

4. Check for Malware

Certain viruses can cause driver issues, leading to blue screens. Run your antivirus program or download a third-party antivirus tool to scan the system.

5. Rollback Drivers or System

If the error appeared after installing a new driver or a system update, try rolling back the driver or using a system restore point:

  • To roll back drivers: go to Device Manager, find the problematic device, right-click on it, choose Properties, go to the Driver tab, and select Roll Back Driver.
  • To restore the system: open Settings → Update & Security → Recovery and select a restore point from before the error occurred.

6. Perform a Clean Install of Windows

If none of the above methods work, you may need to perform a clean install of Windows. Before doing so, make sure to back up important data, as the process could erase it.