1.    17 Sep 2015 #1
    Join Date : Sep 2015
    Posts : 2
    Windows 10

    Random Bsods - IRQL_NOT_LESS_OR_EQUAL


    I'm having some problems with random Bsods after upgrade from windows 7 to 10 (not clean install).
    I did clean reinstall of most of the drivers 1 by 1 to try and track down what's causing the issue without any luck.
    First i thought problem was Xonar STX driver because there was no official Win 10 version (including UNI drivers), after that i did clean reinstall of Nvidia drivers and some other peripherals.

    Bsods still happen at complete random, even when there is no stress on cpu or gpu.
    Some crash dumps points out to portcls.sys which is part of sound drivers, some to cng.sys which is part of kernel.
    I have no idea what else i can do.

    Any suggestions are more than welcome.
    Random Bsods - IRQL_NOT_LESS_OR_EQUAL Attached Files
      My System SpecsSystem Spec

  2.    18 Sep 2015 #2
    Join Date : Jun 2015
    Posts : 10,407
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro

    Hi Vandalas,

    Welcome to the 10forums.

    Daemon tools, Alcohol 120% and Power Archiver Pro uses SCSI Pass Through Direct (SPTD), which is a well known cause for BSOD's.
    Please remove Daemon Tools and run the SPTD pass through remover.

    1. Uninstall Daemon Tools
    2. Download the SPTD standalone installer and follow these steps:
      • Double click the executable to open it
      • Click on the button shown below

    If the button is grayed out, like in the image, there is no more SPTD installation on your system, and you can close the window

    Partition D doesn't have enough free space.
    Every partition needs at least 10-15% free space for windows to do it thing in the background.
    Please remove some files from this partition.
    warning   Warning
    Less free space could cause BSOD's
      My System SpecsSystem Spec

  3.    19 Sep 2015 #3
    Join Date : Sep 2015
    Posts : 2
    Windows 10

    Hello and thanks for reply.

    I did as you suggested. Removed SPTD drivers and some other old unnecessary drivers + some leftover *.sys files.
    Bought external HDD to keep my crap from when i'm used to work with 3dmax and was just too lazy to move somewhere else, so there's more than 200gb free space on D partition now.

    Just to look for more driver issues i ran a "Verifier" and the only issue found was "cmudaxp.sys not digitally signed" which is part of C-Media / Asus xonar drivers. As of now there are no updates available for it... Asus and/or c-media are really slow to update their stuff for windows 10.

    Looks like system is stable with uptime ~24hrs+

    I'll mark this as solved and thanks for help

      My System SpecsSystem Spec

  4.    19 Sep 2015 #4
    Join Date : Jun 2015
    Posts : 10,407
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro

    You're welcome
      My System SpecsSystem Spec


Similar Threads
Thread Forum
Random BSODs while browsing - DRIVER_IRQL_NOT_LESS_OR_EQUAL
Hi all, I've been having issues on and off over the past week or two with randomly appearing BSODs reporting the error "DRIVER_IRQL_NOT_LESS_OR_EQUAL". I know it means there's something going on with my drivers but I'm not sure what's going on. ...
BSOD Crashes and Debugging
Random System_Service_Exception BSODs while gaming
*Title* BSOD usually happens in more graphic intensive games like GTA5 or Elite: Dangerous. I haven't gotten it in games like League of Legends or Hearthstone, which are less intense. 2 most recent Minidump files and the debug file are...
BSOD Crashes and Debugging
Solved Random BSODs following update to W10Pro from W8.1Pro..
Hi, since updating my main desktop to W10Pro from W8.1Pro I've been experiencing random BSODs. Looking at the Event Viewer, they may be driver related.. The driver \Driver\WSDScan for device...
BSOD Crashes and Debugging
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 09:31.
Find Us
Twitter Facebook Google+

Windows 10 Forums