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BSOD PFN List Corrupt


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#1 AlgernonTehMouse

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Posted 19 May 2015 - 12:29 PM

I Went to the pinned BSOD topic in the forum and it said to give you the two zip files, I didn't know how to make the perfmon outputfile a zip. but it will open in HTML (hope thats helpful)

 

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#2 jcgriff2

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Posted 19 May 2015 - 01:57 PM

Hi. .

The bugchecks on the 6 dumps were split -

- 0x1a - severe memory management
- 0x4e (0x99,,,) - corrupt PFN (page frame number)

Usually, these 2 point to RAM or other unknown hardware failure affecting RAM's ability to properly hold kernel code.

Run memtest86+ one stick at a time; alternate the slots - http://www.sysnative.com/forums/hardware-tutorials/3909-test-ram-memtest86.html#post28391

If you have an SSD, check SSD manufacturer support site for firmware upgrade.

Regards. . .

jcgriff2


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#3 Jared44

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Posted 19 May 2015 - 02:20 PM

0: kd> .bugcheck
Bugcheck code 0000001A
Arguments 00000000`00005003 fffff700`01080000 00000000`00002e0e 00002e03`10005c1c

//Memory management bugcheck, working set free list corruption

0: kd> k
Child-SP          RetAddr           Call Site
fffff880`0aadeab8 fffff800`03013044 nt!KeBugCheckEx //BSOD
fffff880`0aadeac0 fffff800`03074b6e nt!MmAccessFault+0x42a1d //Determine the memory referenced and other conditions
fffff880`0aadec20 00000000`635869ad nt!KiPageFault+0x16e //Page fault was incurred
00000000`0739ed80 00000000`00000000 0x635869ad //User mode address

0: kd> !wsle fffff70001080000

Working Set @ fffff70001080000
    FirstFree     2e0e  FirstDynamic        5
    LastEntry     2e6a  NextSlot            5  LastInitialized     2f6e
    NonDirect        0  HashTable           0  HashTableSize          0

0: kd> dt nt!_MMWSLE fffff70001080000
   +0x000 u1               : <unnamed-tag>

//The working set free list is corrupt

Cases of working set corruption is almost always bad RAM, in fact I've never seen a case where it isn't.

 

It occurs because the working set already has the pages it needs in memory, so when you incur a page fault, the page is already valid. Otherwise you would be thrown a 0x50 error for referencing invalid memory.

When the page is brought into the working set, only to realise it is corrupt, it usually means the address that it was assigned to (physical address) is corrupt. If the physical address is corrupt, and not the virtual address, then you've got bad RAM.

 

Have you ran Memtest86+? If not, run it for at least 8 passes.

Do as jcgriff2 suggest in the previous post.

That's what happens when you go AFK halfway through a BSOD analysis, someone gets in before you. :rolleyes:


Edited by Jared44, 19 May 2015 - 02:22 PM.


#4 AlgernonTehMouse

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Posted 21 May 2015 - 02:50 PM

ok so I created a bootable usb with the memtest thing and tested one RAM stick up to 2 passes with no errors , so I try the other ones, now my computer when turned on only beeps I know not all the memory is bad but now my computer won't boot up at all. I feel pretty defeated (Facepalm)



#5 Jared44

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Posted 21 May 2015 - 02:59 PM

Ru Memtest for 8 passes, minimum.

I'm still certain it's a RAM issue.






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