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. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Run Windows Memory Diagnostic tool

Run Windows Memory Diagnostic tool.

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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02Update motherboard chipset and graphics drivers

Update motherboard chipset and graphics 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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03Run SFC scan to fix corrupted kernel files

Run SFC scan to fix corrupted kernel files.

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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04Reset BIOS memory configurations to defaults

Reset BIOS memory configurations to defaults.

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

  • 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 any action inside the tool before applying changes.

mdsched.exe