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0x000000D1BSODCritical

0x000000D1 — Driver IRQL not Less or Equal | Blue Screen Fix Guide

DRIVER_IRQL_NOT_LESS_OR_EQUAL

Windows 10Windows 11

What Does 0x000000D1 Mean?

A driver attempted to access pageable memory at a kernel IRQL that was too high. This is the driver-specific version of 0x0A.

Real-World Causes

  1. 1Faulty device driver accessing pageable memory at raised IRQL
  2. 2Incompatible driver
  3. 3Driver bug in interrupt handler
  4. 4Network or storage driver error

Symptoms

  • ⚠Blue screen with stop code DRIVER_IRQL_NOT_LESS_OR_EQUAL
  • ⚠System reboots unexpectedly
  • ⚠Possible data loss from unsaved work

DIY Fix

Beginner-friendly steps you can try at home

  1. 1Restart your computer
  2. 2Update or roll back recently installed drivers
  3. 3Run System File Checker (sfc /scannow)
  4. 4Check Windows Update for driver updates

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze crash dump with WinDbg
  2. 2Run Driver Verifier to isolate faulty driver
  3. 3Use Safe Mode to uninstall problematic drivers
  4. 4Check Event Viewer for related errors

Frequently Asked Questions

What causes DRIVER_IRQL_NOT_LESS_OR_EQUAL?
A driver attempted to access pageable memory at a kernel IRQL that was too high. This is the driver-specific version of 0x0A.
Can I fix Driver IRQL not Less or Equal myself?
In many cases yes. Start with basic troubleshooting like restarting, updating drivers, and running System File Checker. If the issue persists, advanced analysis of crash dumps may be needed.

Related Error Codes

0x0000000AIRQL not Less or Equal0x000000D3Driver Portion Must Be Nonpaged

About the Author

Windows Troubleshooting Team

Verified against official Microsoft documentation and real-world diagnostic data. Error behavior confirmed across Windows 10, Windows 11, and Windows Server.