• Question

  • Hi

    Could someone please help me. I have Windows 7 Pro and my machine just gave me a BSOD.

    Here is the link to the dump file:


    Your help will be much appreciated.

    Tuesday, July 29, 2014 7:24 AM


  • Hi,

    The attached DMP file is of the PAGE_FAULT_IN_NONPAGED_AREA (50) bug check.

    This indicates that invalid system memory has been referenced.

    Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM).

    Another common cause is the installation of a faulty system service.

    Antivirus software can also trigger this error, as can a corrupted NTFS volume.

    0: kd> k
    ChildEBP RetAddr  
    99f3364c 82e44aa8 nt!MmAccessFault+0x106
    99f3364c 8305c68b nt!KiTrap0E+0xdc
    99f336e0 8305b502 nt!MiApplyCompressedFixups+0x15
    99f3371c 8305a9ef nt!MiPerformFixups+0x6d
    99f33740 82ebbafc nt!MiRelocateImagePfn+0x105
    99f3379c 83067698 nt!MiValidateImagePages+0x331
    99f337c0 8305b442 nt!MiSwitchBaseAddress+0x4a
    99f337e4 83028d19 nt!MiRelocateImageAgain+0xe1
    99f33900 830282ab nt!MmCreateSection+0x531
    99f33974 8c615b01 nt!NtCreateSection+0x16e
    WARNING: Stack unwind information not available. Following frames may be wrong.
    99f339a4 83086d7e aswSP+0x15b01
    99f33a1c 83086991 nt!PfSnGetSectionObject+0x1a4
    99f33ab4 830866db nt!PfSnPrefetchSections+0x1d4
    99f33c34 8305f901 nt!PfSnPrefetchScenario+0x1a9
    99f33cc8 8307745f nt!PfSnBeginAppLaunch+0x382
    99f33cd8 8305d5f8 nt!PfProcessCreateNotification+0x65
    99f33d20 82eb4549 nt!PspUserThreadStartup+0x113
    00000000 00000000 nt!KiThreadStartup+0x19

    avast!'s Self Protection driver is referencing invalid memory.

    0: kd> lmvm aswSP
    start    end        module name
    8c600000 8c626c80   aswSP    T (no symbols)           
        Loaded symbol image file: aswSP.SYS
        Image path: \SystemRoot\System32\Drivers\aswSP.SYS
        Image name: aswSP.SYS
        Timestamp:        Tue Sep 07 10:52:01 2010

    Your avast! is nearly 4 years old, why is it so old? Is it a legitimate copy?


    Regardless, remove and replace avast! with Microsoft Security Essentials for temporary troubleshooting purposes:

    avast! removal - http://www.avast.com/uninstall-utility

    MSE -  http://windows.microsoft.com/en-us/windows/security-essentials-download



    “Be kind whenever possible. It is always possible.” - Dalai Lama

    • Proposed as answer by Yolanda Zhu Wednesday, July 30, 2014 1:49 AM
    • Marked as answer by Roger Lu Tuesday, August 5, 2014 9:40 AM
    Tuesday, July 29, 2014 7:35 AM