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Windows 7: BSoD at random times, error 0x000000C4 (STOP): Ntfs.sys

07 Jan 2013   #11
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit

Just to add, the WHEA crashdump said it was a PCI-E bus issue:

Use !analyze -v to get detailed debugging information.

BugCheck 124, {4, fffffa80041a0038, 0, 0}

TRIAGER: Could not open triage file : C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\triage\modclass.ini, error 2
Probably caused by : GenuineIntel

Followup: MachineOwner

3: kd> !errrec fffffa80041a0038
Common Platform Error Record @ fffffa80041a0038
Record Id     : 01cdeb974d9c14a6
Severity      : Fatal (1)
Length        : 672
Creator       : Microsoft
Notify Type   : PCI Express Error
Timestamp     : 1/6/2013 0:07:22 (UTC)
Flags         : 0x00000000

Section 0     : PCI Express
Descriptor    @ fffffa80041a00b8
Section       @ fffffa80041a0148
Offset        : 272
Length        : 208
Flags         : 0x00000001 Primary
Severity      : Recoverable

Port Type     : Root Port
Version       : 1.1
Command/Status: 0x0010/0x0407
Device Id     :
  VenId:DevId : 8086:d138
  Class code  : 030400
  Function No : 0x00
  Device No   : 0x03
  Segment     : 0x0000
  Primary Bus : 0x00
  Second. Bus : 0x00
  Slot        : 0x0000
Dev. Serial # : 0000000000000000
Express Capability Information @ fffffa80041a017c
  Device Caps : 00008021 Role-Based Error Reporting: 1
  Device Ctl  : 0107 ur FE NF CE
  Dev Status  : 0003 ur fe NF CE
   Root Ctl   : 0008 fs nfs cs

AER Information @ fffffa80041a01b8
  Uncorrectable Error Status    : 00014000 ur ecrc mtlp rof UC ca CTO fcp ptlp sd dlp und
  Uncorrectable Error Mask      : 00000000 ur ecrc mtlp rof uc ca cto fcp ptlp sd dlp und
  Uncorrectable Error Severity  : 00062010 ur ecrc MTLP ROF uc ca cto FCP ptlp sd DLP und
  Correctable Error Status      : 00002000 ADV rtto rnro dllp tlp re
  Correctable Error Mask        : 00000000 adv rtto rnro dllp tlp re
  Caps & Control                : 0000000e ecrcchken ecrcchkcap ecrcgenen ecrcgencap FEP
  Header Log                    : 00000000 00000000 00000000 00000000
  Root Error Command            : 00000000 fen nfen cen
  Root Error Status             : 00000000 MSG# 00 fer nfer fuf mur ur mcr cer
  Correctable Error Source ID   : 00,00,00
  Correctable Error Source ID   : 00,00,00

Section 1     : Processor Generic
Descriptor    @ fffffa80041a0100
Section       @ fffffa80041a0218
Offset        : 480
Length        : 192
Flags         : 0x00000000
Severity      : Informational

Proc. Type    : x86/x64
Instr. Set    : x64
CPU Version   : 0x00000000000106e5
Processor ID  : 0x0000000000000003
This is a typical hardware problem. UC means Unexpected Completion caused by the CTO - Completion Timed Out. It means a communication completion got timed out for some reason, most likely because it didn't reach its destination. I've seen this happen from dust and other debris inside PCI/PCI-E ports, cards not sitting properly in their port, PSU problems, a bad PCI/PCI-E card, or a bad motherboard. Unfortunately, it cannot - or at least I can't decipher from it - what device(s) were involved. If you still end up experiencing issues with this, you can try considering fixing any of the aforementioned causes listed. Otherwise, hope everything turns out well for ya.

My System SpecsSystem Spec
08 Jan 2013   #12

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64

Just a quick suggestion, you have found a driver fault, ASLDR, which is a driver for your keyboard F functions.
The windows debugger usually can't find the exact (pinpoint) problem, you have to use it to explore the direction it is indicating. It gives you hints as where to look, which is where the analyses comes in.
As Vir Gnarus has found, it's a hardware problem. This type of cause is very difficult for the debugger to locate, as it's better at finding software and driver issues.
There is a possibility that the keyboard is causing the crashes.
Easy to test on a desktop and very difficult on a laptop, an external keyboard won't disable the laptop keyboard.

Whenever I see a laptop with an i7 CPU and discrete graphics card, you have to look into CPU/system overheating, which is the number 1 cause of crashes on these laptops.
Use Real Temp , to check the CPU temps when at idle, under load and/or testing.
Let us know the minimum and maximum temps you get.

Since you didn't give us your System Event Logs, you can look through them for any CPU thermal issues. This is the best way to determine if they are involved in your crashes.
My System SpecsSystem Spec
08 Jan 2013   #13
Vir Gnarus

Microsoft Community Contributor Award Recipient

Windows 7 64-bit

Yes, this doesn't rule out the keyboard for sure and may implicate it, or at least the USB port it's connected too, since USB commonly runs through the PCI-E bus on OEM systems, especially on laptops.
My System SpecsSystem Spec

09 Jan 2013   #14

Seven Professional x64

A few days went by, I reinstalled Deamon Tools and my antivirus.
I am stil lable to run the 'problem-triggering' game without any BSoD anymore...

So all that for a BIOS update. That's a bit disappointing though

Thanks a lot for your help, again
Problem solved
My System SpecsSystem Spec
09 Jan 2013   #15

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64

Glad to hear your system is stable.

Thanks for letting us know.
My System SpecsSystem Spec

 BSoD at random times, error 0x000000C4 (STOP): Ntfs.sys

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