Windows 8 and 8.1 Forums

Frequent Random Crashes

  1. #1

    Posts : 17
    Windows 8

    Frequent Random Crashes

    About 1-2 weeks ago I had frequent BSOD's at startup, "DRIVER_IRQL_NOT_LESS_OR_EQUAL (iaStorA.sys)". As of the last week I haven't gotten a single one again.

    Instead I am now getting freezes/crashes and I'm not sure what to do as as far as I know these crashes don't leave much information behind. The crashes are just that the mouse becomes unresponsive and any sound that was playing just repeats on loop. I have only gotten two BSOD's since the original issue was fixed and the most recent one today, was related to "
    ntoskrnl.exe". The BSOD said that Driver Verifier found an exception however I'm pretty sure driver verifier has been off for some time (checked verifier /query and verifier /reset just to be sure).

    Also, sometimes on startup before the logon screen, the computer will either freeze while on the windows logo or my monitor would go black. The monitor light would flash meaning there was no signal between the computer and monitor (i think).

    Thanks for your time.

      My System SpecsSystem Spec

  2. #2

    Posts : 660
    windows 8.1

    Your latest dumpfile Probably caused by : win32k.sys ( win32k+1ae5de )

    *                                                                             *
    *                        Bugcheck Analysis                                    *
    *                                                                             *
    Use !analyze -v to get detailed debugging information.
    BugCheck C4, {91, 0, fffffa800d8615c0, 0}
    *** WARNING: Unable to verify timestamp for win32k.sys
    *** ERROR: Module load completed but symbols could not be loaded for win32k.sys
    Probably caused by : win32k.sys ( win32k+1ae5de )
    Followup: MachineOwner
    0: kd> !analyze -v
    *                                                                             *
    *                        Bugcheck Analysis                                    *
    *                                                                             *
    A device driver attempting to corrupt the system has been caught.  This is
    because the driver was specified in the registry as being suspect (by the
    administrator) and the kernel has enabled substantial checking of this driver.
    If the driver attempts to corrupt the system, bugchecks 0xC4, 0xC1 and 0xA will
    be among the most commonly seen crashes.
    Arg1: 0000000000000091, A driver switched stacks using a method that is not supported by
     the operating system. The only supported way to extend a kernel
     mode stack is by using KeExpandKernelStackAndCallout.
    Arg2: 0000000000000000
    Arg3: fffffa800d8615c0
    Arg4: 0000000000000000
    Debugging Details:
      Kernel Generated Triage Dump
    BUGCHECK_STR:  0xc4_91
    PROCESS_NAME:  csrss.exe
    ANALYSIS_VERSION: 6.3.9600.16384 (debuggers(dbg).130821-1623) amd64fre
    TRAP_FRAME:  00000000002500ff -- (.trap 0x2500ff)
    Unable to read trap frame at 00000000`002500ff
    LAST_CONTROL_TRANSFER:  from fffff80338388f6e to fffff803382d0540
    fffff901`030466a8 fffff803`38388f6e : 00000000`000000c4 00000000`00000091 00000000`00000000 fffffa80`0d8615c0 : nt!KeBugCheckEx
    fffff901`030466b0 fffff803`38363bcd : fffff901`030475f8 fffff901`030476a0 00000000`00000000 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x3e596
    fffff901`030466f0 fffff803`3833e302 : fffff901`030475f8 fffff901`03047330 fffff901`030475f8 00000000`00000000 : nt!RtlDispatchException+0x71
    fffff901`03046e00 fffff803`382cf942 : 00000000`00000000 10006856`dcf95b9e 00000000`002500ff 00000000`00000001 : nt!KiDispatchException+0x455
    fffff901`030474c0 fffff803`382cde4a : 00000000`6a9d15e1 fffff901`03047520 00000000`00000000 00000000`00000000 : nt!KiExceptionDispatch+0xc2
    fffff901`030476a0 fffff960`0037b5de : 56300000`00000820 00000000`00010324 00000000`00000000 00000000`00000000 : nt!KiGeneralProtectionFault+0x10a
    fffff901`03047830 56300000`00000820 : 00000000`00010324 00000000`00000000 00000000`00000000 fffff901`03045c80 : win32k+0x1ae5de
    fffff901`03047838 00000000`00010324 : 00000000`00000000 00000000`00000000 fffff901`03045c80 fffff901`03042680 : 0x56300000`00000820
    fffff901`03047840 00000000`00000000 : 00000000`00000000 fffff901`03045c80 fffff901`03042680 00000000`00000000 : 0x10324
    fffff960`0037b5de ??              ???
    SYMBOL_NAME:  win32k+1ae5de
    FOLLOWUP_NAME:  MachineOwner
    MODULE_NAME: win32k
    IMAGE_NAME:  win32k.sys
    FAILURE_BUCKET_ID:  0xc4_91_win32k+1ae5de
    BUCKET_ID:  0xc4_91_win32k+1ae5de
    FAILURE_ID_HASH_STRING:  km:0xc4_91_win32k+1ae5de
    FAILURE_ID_HASH:  {afdf918a-b951-fb58-df8d-012058e11292}
    Followup: MachineOwner
    This could be pointing to a not compatible device or (device)driver.
    You have these outdated drivers
    AVer7231_x64 fffff880`04e35000 fffff880`04fec680 Fri Jun 11 03:14:39 2010 (4c118dff) 001c03bd AVer7231_x64.sys
    This is the driver for your Avermedia capture device

    mwlPSDFilter fffff880`04575000 fffff880`0457e000 Tue Jun 02 12:07:30 2009 (4a24f9e2) 0000afe2 mwlPSDFilter.sys
    mwlPSDNServ fffff880`04ae0000 fffff880`04ae8000 Tue Jun 02 12:07:39 2009 (4a24f9eb) 0000ac2f mwlPSDNServ.sys
    mwlPSDVDisk fffff880`04acd000 fffff880`04ae0000 Tue Jun 02 12:15:29 2009 (4a24fbc1) 0001c2bd mwlPSDVDisk.sys
    These drivers belong to:
    Driver Description: EgisTec Inc. Fingerprint Biometrics
    Driver Update Site: EgisTec Inc. - Data Security & Media Sharing & Cloud

    Please update both devices to the latest windows 8.1 drivers.

    The other dumpfile(11 july) blames Probably caused by : aswSP.sys ( aswSP+10d66 )
    This is a driver which belongs to Avast

    Driver Description: avast! Self Protection Driver
    Driver Update Site:
      My System SpecsSystem Spec

  3. #3

    Posts : 17
    Windows 8

    Thanks for the response,

    I hadn't heard of "EgisTec Inc. Fingerprint Biometrics" or Avermedia before so I assume it came with the PC years ago, would prefer to uninstall them rather than update it if that's fine?

    Could these be related to the computer freezes too? As I'm still getting them during computer startup (some before logon and some after) and they don't make any dump files.

      My System SpecsSystem Spec

  4. #4

    Posts : 660
    windows 8.1

    I assume that the Egis Biometrics is purely software, so uninstall it will do.

    Your aVermedia device is probably the AVermedia Tv tuner and i think this is probably a inserted PCI card.
    I would not only uninstall the drivers/software but als physically remove the device from your PC.

    Could these be related to the computer freezes too? As I'm still getting them during computer startup (some before logon and some after) and they don't make any dump files
    The TVtuner might be related, because it is part of your hardware layer.
      My System SpecsSystem Spec

  5. #5

    Posts : 17
    Windows 8

    Okay, I'm still having problems. I crashed about 5 times in a row this morning:

    1. Just logged on, minutes later, everything freezes (monitor still on).
    2. Immediately after turning on the computer again, no monitor signal. This surely means I have at least one hardware problem right? From what I know nothing is loading on the computer that early.
    3. Got the "Acer" screen then it freezes (keyboard turns off).
    4. Logged into windows, freezes (monitor still on).
    5. Got a BSOD as I was writing this post (first BSOD in 5 days).

    Looks like I'm getting three types of problems, freezes, no signal to monitor/keyboard off, and BSOD (rare).

    Thanks for the help again.
      My System SpecsSystem Spec

  6. #6

    Posts : 660
    windows 8.1

    Your latest dumpfiles is Probably caused by : memory_corruption.

    Please test your memory.

    Tutorial Memtest86+ and download


    Your outdated (device) drivers are still present in the dumpfile.
      My System SpecsSystem Spec

  7. #7

    Posts : 17
    Windows 8

    Okay, sorry I thought I had updated the drivers, I'm sure I updated a lot of drivers except EgisTec by the time this BSOD happened (dumpfile attached). I don't seem to have any software relating to it in the control panel to uninstall it and I can't find where to get driver updates for it on their website.

    I think "Bioexcess"

    BioExcess - Security with Biometric Features - Software - EgisTec Inc.

    is the fingerprint software? Should I download the free trial in the hopes that this updates any drivers? (Still don't understand why this desktop came with this software unless I mistakenly installed it..)

    I ran Memtest86:

    Attachment 47353

    Edit: Just got a new BSOD "KMODE_EXCEPTION_NOT_HANDLED" but was stuck at 0% collecting information, didn't produce a dump file.. next startup monitor when on black and then on the next startup I got something I had never seen before:

    Attachment 47528

    CMOS Checksum error? I did a bit of quick research and found people experiencing the same problem of the monitor going black but the computer still on etc. and they mentioned the battery on the motherboard?
    Last edited by Aftershockjr; 24 Jul 2014 at 04:35.
      My System SpecsSystem Spec

  8. #8

    Posts : 5,139
    Win8.1Pro - Finally!!!

    My apologies for butting in here, but I received a PM request from Aftershockjr asking me to help out.

    Replace the CMOS battery on the motherboard.
    Then see if the CMOS Checksum error goes away.
    Ensure that you reset the Date/Time in the BIOS after messing with the battery.

    The "Verifier Enabled" memory dump may not be due to verifier. This particular error (STOP 0xC4) occurs without verifier being enabled.

    I'd suggest that you run Driver Verifier according to these instructions: Driver Verifier Settings
    It may show different results from the previous verifier enabled memory dumps.

    Your BIOS dates from 2010. Please check at the manufacturer's website to see if there are any BIOS updates available for your system. Also check the readme file to see if they apply to the problems that you are having. Please be advised that flashing the BIOS is a very unforgiving process - and one mistake can physically damage your motherboard.

    The latest version of the BIOS appears to be:
    P01.A4 3.6 dated 2011/05/16

    Please note that Acer does not offer drivers for Win8 for this system. As such I have to wonder if it's compatible w/Win8. We'll continue to suggest things to fix - but it's up to you to decide if it just isn't compatible w/Win8 (due to repeated, unfixable problems). The solution for this is to either downgrade to Win7, or to buy a new system (or at least buy Win8 compatible parts).

    There is no EgisTec Inc. Fingerprint Biometrics device that comes with the computer, nor is there software for it.
    As such, I'd suggest uninstalling the EgisTech/BioExcess stuff
    Check in Device Manager after uninstalling it (and rebooting) to make sure that there aren't any problem devices. If there are, please let us know what they are.

    Uninstall the TV Tuner software and then physically remove the Tuner from your system. If needed, feel free to try it again AFTER the system has been stabilized.

    The point here (IMO) is to stop the BSOD's. Once that's done, then we can work on the other problems (freezing/black screen).

    Lot's to suggest for those problems - but let's wait and see what Driver Verifier tells us first.

    The following is for informational purposes only.
    **************************Fri Jul 18 01:17:53.348 2014 (UTC - 4:00)**************************
    Loading Dump File [C:\Users\John\SysnativeBSODApps\071814-21559-01.dmp]
    Windows 8 Kernel Version 9200 MP (8 procs) Free x64
    Built by: 9200.16912.amd64fre.win8_gdr.140502-1507
    System Uptime:0 days 0:57:09.028
    *** ERROR: Module load completed but symbols could not be loaded for mssmbios.sys
    Probably caused by :ntkrnlmp.exe ( nt!KiExecuteAllDpcs+bc )
    BugCheck A, {0, 2, 0, fffff803d6d02d1c}
    BugCheck Info: IRQL_NOT_LESS_OR_EQUAL (a)
    Arg1: 0000000000000000, memory referenced
    Arg2: 0000000000000002, IRQL
    Arg3: 0000000000000000, bitfield :
        bit 0 : value 0 = read operation, 1 = write operation
        bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)
    Arg4: fffff803d6d02d1c, address which referenced memory
    PROCESS_NAME:  System
    FAILURE_BUCKET_ID: AV_nt!KiExecuteAllDpcs
    3rd Party Drivers:
    The following is for information purposes only.
    Any drivers in red should be updated or removed from your system. And should have been discussed in the body of my post.
    **************************Fri Jul 18 01:17:53.348 2014 (UTC - 4:00)**************************
    mwlPSDFilter.sys       Tue Jun  2 06:07:30 2009 (4A24F9E2)
    mwlPSDNServ.sys        Tue Jun  2 06:07:39 2009 (4A24F9EB)
    mwlPSDVDisk.sys        Tue Jun  2 06:15:29 2009 (4A24FBC1)
    AVer7231_x64.sys       Wed Apr  7 23:13:25 2010 (4BBD49D5)
    intelppm.sys           Mon Nov  5 22:55:02 2012 (50988A16)
    speedfan.sys           Sat Dec 29 15:59:35 2012 (50DF59B7)
    Smb_driver_Intel.sys   Tue Apr 23 20:36:19 2013 (51772903)
    RtsUStor.sys           Tue Aug 27 02:11:31 2013 (521C4313)
    Rt630x64.sys           Mon Sep  9 02:47:07 2013 (522D6EEB)
    nvhda64v.sys           Thu Nov 28 08:38:09 2013 (52974741)
    RTKVHD64.sys           Wed Mar 19 04:01:43 2014 (53294EE7)
    nvvad64v.sys           Fri Mar 28 09:32:06 2014 (533579D6)
    iaStorA.sys            Fri May  2 19:06:56 2014 (53642510)
    dump_iaStorA.sys       Fri May  2 19:06:56 2014 (53642510)
    NvStreamKms.sys        Thu May 22 12:43:14 2014 (537E2922)
    nvlddmkm.sys           Thu Jun 12 20:18:13 2014 (539A4345)
      My System SpecsSystem Spec

  9. #9

    Posts : 17
    Windows 8

    Thank you very much for the quick response!

    The CMOS checksum error occurred only once, should I still replace the battery? At first I thought/hoped it was what was causing the freeze/monitor black screen but then I found out it only holds the time on the computer. As the computer is not losing its time and I'm not getting the error, should I still fiddle around with it?

    I wouldn't mind downgrading to Windows 7 if the problem persists so I'll keep that in mind. What confuses me is that I've had windows 8 for 7-9 months or so and the computer for a couple of years and never had any problems yet I'm suddenly getting BSOD's, freezes and blackscreens in the last month (it may have all started with Intel RST and the iaStorA.sys BSOD which stopped weeks ago after uninstalling/reinstalling Intel RST).

    Edit: Oops, I had meant to say that the BIOS updates don't mention my problems*

    As when lifetec also suggested uninstalling the Aver/EgisTec and removing the card, I don't have any software installed (from the control panel, right? ). In device manager I do see "AVerMedia H751 Hybrid Analog/DVB-T" under "Sound, video and game controllers" so I'm assuming uninstalling this should also get rid of the AVer7231_x64.sys file? How can I remove the Egistec system files though if I can't find any installed software or drivers?

    I finally have time this weekend to open up the computer and remove the Aver TV Tuner card, does it just have to be disconnected from the motherboard and that's it? Thanks again lifetec and usasma.
    Last edited by Aftershockjr; 26 Jul 2014 at 01:30.
      My System SpecsSystem Spec

  10. #10

    Posts : 5,139
    Win8.1Pro - Finally!!!

    Your choice on the CMOS checksum error and the battery.
    It does not "only" hold the time on the computer (but that's all that most people use it for)
    In the XP/Vista/maybe Win7 days the BIOS would stay at the date it was set.

    Starting in Win 8 (maybe in Win7) the BIOS was being updated by Windows - so you'd see the time changing if you set it wrong. This depends on the capabilities of your motherboard and it's BIOS (and it's ability to communicate w/Win8)

    In and amongst all of this, UEFI debuted and that just made things more complicated :0)

    If this is an incompatibility, the incompatibility has been there from the start. Most likely it's just that the incompatibility was able to work with Windows until an update came out that exposed it's problem.

    As for Aver/EgisTech stuff - remove the card from the motherboard, then go to Device Manager and see if it's still there. If so, right click on it and select "uninstall" Then reboot and see if it comes back.

    Post the results here and we'll see what to do next (?maybe manually remove the drivers after the next BSOD - if it still shows them).
      My System SpecsSystem Spec

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