Windows & BSOD · critical

How to fix0x0000004E

PFN_LIST_CORRUPT (0x4E)

What this error means

PFN_LIST_CORRUPT (0x4E) is a critical-severity Windows operating system issue. The Page Frame Number (PFN) database list was detected as corrupted. This is a critical memory management BSOD. Most commonly caused by driver conflicts writing to page tables incorrectly, physical RAM hardware failure, or corrupted system files. Use the steps below to track down and fix the cause.

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
01Run Windows Memory Diagnostic tool
  1. Run Windows Memory Diagnostic tool
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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02Update motherboard chipset and graphics drivers
  1. Update motherboard chipset and graphics 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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03Run SFC scan to fix corrupted kernel files
  1. Run SFC scan to fix corrupted kernel files
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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04Reset BIOS memory configurations to defaults
  1. Reset BIOS memory configurations to defaults
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

  • Corrupt device driver writing to page memory lists
  • Faulty RAM hardware or memory controller
  • Unstable memory timing (XMP) voltages
  • System file registry directory corruption

Useful Windows tools

These commands open Windows tools. Review changes before applying them.

mdsched.exe