Windows & BSOD · critical

How to fix0x000000D1

DRIVER_IRQL_NOT_LESS_OR_EQUAL

What this error means

DRIVER_IRQL_NOT_LESS_OR_EQUAL (0x000000D1) is a critical-severity fault affecting the Windows operating system. A kernel-mode driver attempted to access pageable memory at a process IRQL that was too high. Caused by corrupt drivers, faulty memory, or antivirus software. It sometimes comes down to corrupted system files. See the troubleshooting steps below for the fix.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Update network and motherboard drivers

Update network and motherboard drivers.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Test memory with MemTest86

Test memory with MemTest86.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Temporarily disable antivirus software

Temporarily disable antivirus software.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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04Run SFC and DISM tools

Run SFC and DISM tools.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Corrupted system drivers (e.g. network, USB, GPU)
  • Unstable RAM or memory timing
  • Antivirus software conflicts
  • Corrupted system files

Useful Windows tools

These commands open Windows tools. Review any action inside the tool before applying changes.

mdsched.exe