1. #1

    0x18 on Windows 7 x64

    PC had been running about 41 minutes, the last 10 minutes in i had opened league of legends launcher and started watching a streaming video on palemoon before the bluescreen.

    OS - Windows 7
    64 bit.
    What was original installed OS on system? windows xp.
    Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer) - full retail version
    Age of system - psu 5 years old. rest of system 8-18 months old.
    Age of OS installation - have you re-installed the OS? 2 years old.

    CPU - AMD Phenom(tm) IIx4 B55 Processor 3.82 GHz
    Video Card - Radeon HD 6770 1GB

    MotherBoard - GA-MA770T-UD3
    Power Supply - Arctic Power 600W PSU

    System Manufacturer
    Exact model number - homebuilt
    Attached Files Attached Files

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  2. #2
    satrow's Avatar
    Join Date
    Apr 2012
    • specs System Specs
      • Motherboard:
        ASRock Z77E-ITX
      • CPU:
        E3-1230 V2 3.3GHz
      • Memory:
        16GB G.Skill DDR3 2400
      • Graphics:
        Asus GTX1060
      • Sound Card:
      • Hard Drives:
        3x250GB SSDs, 2x 2.5 1TB HDD JBOD
      • Power Supply:
        Seasonic 360W Gold
      • Case:
        BitFenix Prodigy Black
      • Cooling:
        Be Quiet Shadow Rock Topflow + 2x case fans
      • Display:
        Dell U2412M 1900x1200 x2 (sometimes x3)
      • Operating System:
        W7 x64 Pro

    Re: 0x18 on Windows 7 x64

    Welcome to Sysnative

    <Disclosure: I know the owner and machine in question here.>

    I don't recall trying to debug an 0x18 before, so I really could do with someone checking this over. The !object fffffa800462bc18 command - which might be the most useful with this type of bugcheck - was a dead end for me, so I'll throw in a couple of guesses based on the oldest 3rd party driver and the PC usage at the time of the crash.

    I'm leaning towards an old wireless driver, download the latest one directly from here. Don't install it yet!
    Installation Instructions:

    Download using the button below to a convenient place such as your desktop and unzip it.
    NOTE: After downloading, DO NOT RUN THE FILE YET. Please proceed to Step 2.
    To properly install adapter software, please remove drivers that were previously installed.
    To uninstall, go to Start > Programs > NETGEAR WNA3100 adapter > Uninstall NETGEAR WNA3100 adapter .
    Unplug the WNA3100 adapter from your computer.
    Run the file you just downloaded and follow the on-screen install instructions.
    That should result in the 2007 scmndisp.sys driver updating to June 2011.

    I also wonder whether the recently updated Flash plugin (yes, it's now NPSWF64_11_3_300_262.dll) was part of this, revert the Flash plugin version to by carefully following the instructions here:
    Don't forget to check the box to warn about an update - don't allow it to update until we know there's a reasonably stable version.


    Loading Dump File [C:\Users\RoLY\_jcgriff2_\dbug\__Kernel__\062512-14164-01.dmp]
    Built by: 7601.17803.amd64fre.win7sp1_gdr.120330-1504
    Debug session time: Mon Jun 25 10:16:18.645 2012 (UTC + 1:00)
    System Uptime: 0 days 0:41:28.176
    BugCheck 18, {0, fffffa800462bc18, 2, ffffffffffffffff}
    Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+49331 )
    BUGCHECK_STR:  0x18
    PROCESS_NAME:  taskhost.exe
    FAILURE_BUCKET_ID:  X64_0x18_OVER_DEREFERENCE_nt!_??_::FNODOBFM::_string_+49331
    Bugcheck code 00000018
    Arguments 00000000`00000000 fffffa80`0462bc18 00000000`00000002 ffffffff`ffffffff
    BiosVersion = F7
    BiosReleaseDate = 07/09/2010
    SystemManufacturer = Gigabyte Technology Co., Ltd.
    SystemProductName = GA-MA770T-UD3
    *** 3rd PARTY DRIVER LIST ***

    AtihdW76.sys     Wed Nov 17 12:02:04 2010 (4CE3C43C)
    Lachesis.sys     Fri Oct 16 14:09:12 2009 (4AD87078)
    Lycosa.sys       Wed Sep 08 04:01:26 2010 (4C86FC86)
    Rt64win7.sys     Tue Nov 30 06:01:28 2010 (4CF49338)
    VKbms.sys        Thu Sep 30 17:16:33 2010 (4CA4B7E1)
    amdiox64.sys     Thu Feb 18 15:17:53 2010 (4B7D5A21)
    amdxata.sys      Fri Mar 19 16:18:18 2010 (4BA3A3CA)
    atikmdag.sys     Fri Apr 06 02:48:25 2012 (4F7E4B69)
    atikmpag.sys     Fri Apr 06 02:10:44 2012 (4F7E4294)
    avgntflt.sys     Tue Apr 24 07:14:35 2012 (4F9644CB)
    avipbb.sys       Thu Apr 26 11:12:40 2012 (4F991F98)
    avkmgr.sys       Thu Sep 15 14:36:11 2011 (4E71FF4B)
    bcmwlhigh664.sys Fri Nov 06 00:27:07 2009 (4AF36D5B)
    dump_pciidex.sys Tue Jul 14 00:19:47 2009 (4A5BC113)
    mshidkmdf.sys    Tue Jul 14 01:06:24 2009 (4A5BCC00)
    scmndisp.sys     Wed Jan 17 07:48:03 2007 (45ADD4B3)
    3rd party driver details and download links should be available from the links below:


  3. #3

    Join Date
    Mar 2012

    Re: 0x18 on Windows 7 x64

    Satrow, you're doing it right. First thing I would've done would also check the object details. As you can figure from the lengthy description of this bugcheck, the 4th parameter in the bugcheck is evidently showing that the reference count for the object dropped below zero (hence it underflowed and rolled backwards to ffffffffffffffff).

    The only way to debug this would be to either sic Driver Verifier on it, or to hand us a kernel dump of the crash.

    BTW, 5 year old PSU? May wanna change that, regardless if it's involved with this or not.
    satrow says thanks for this.

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