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. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 4 complete
01Update network and motherboard drivers
  1. Update network and motherboard drivers
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Test memory with MemTest86
  1. Test memory with MemTest86
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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03Temporarily disable antivirus software
  1. Temporarily disable antivirus software
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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04Run SFC and DISM tools
  1. Run SFC and DISM tools
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

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 changes before applying them.

mdsched.exe