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Wednesday, November 7, 2012


The PFN_LIST_CORRUPT bug check has a value of 0x0000004E. This indicates that the page frame number (PFN) list is corrupted.

Important Info If You Have Received a STOP Code

If you received a blue screen error, or stop code, the computer has shut down abruptly to protect itself from data loss. A hardware device, its driver, or related software might have caused this error. If your copy of Windows came with your computer, call the manufacturer of your computer. If you purchased Windows separately from your computer, Microsoft provides support. To find contact info for Microsoft or your computer manufacturer, Contact Support.
If you have experience with computers and want to try to recover from this error, follow the steps provided in the Microsoft article Resolving STOP (Blue Screen) Errors in Windows.
These actions might prevent an error like this from happening again:
  1. Download and install updates and device drivers for your computer from Windows Update.
  2. Scan your computer for computer viruses.
  3. Check your hard disk for errors.


The following parameters are displayed on the blue screen. Parameter 1 indicates the type of violation. The meaning of the other parameters depends on the value of Parameter 1.
Parameter 1Parameter 2Parameter 3Parameter 4Cause of Error
The ListHead value that was corrupted
The number of pages available
The list head was corrupted.
The entry in the list that is being removed
The highest physical page number
The reference count of the entry being removed
A list entry was corrupted.
The page frame number
The current share count
A driver has unlocked a certain page more times than it locked it.
The page frame number whose state is inconsistent
The page-free list is corrupted. This error code most likely indicates a hardware issue.
New page number
Old page number
The free or zeroed page listhead is corrupted.
Page frame number
Current page state
A page table entry (PTE) or PFN is corrupted.
Page frame number
Current page state
The reference count of the entry that is being removed
A driver attempted to free a page that is still locked for IO.


This error is typically caused by a driver passing a bad memory descriptor list. For example, the driver might have called MmUnlockPages twice with the same list.
If a kernel debugger is available, examine the stack trace.

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