Windows 10: Driver IRQL not Less or Equal - l1c63x64.sys

Discus and support Driver IRQL not Less or Equal - l1c63x64.sys in Windows 10 BSOD Crashes and Debugging to solve the problem; So these BSODs have been bugging me for quite a while now. Sometimes they just appear completely at random. I just had a 2 month clean go, and then it... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by Timmiej93, May 31, 2016.

  1. Timmiej93 Win User

    Driver IRQL not Less or Equal - l1c63x64.sys


    So these BSODs have been bugging me for quite a while now. Sometimes they just appear completely at random. I just had a 2 month clean go, and then it came back 3 times in 2 days.
    At other times, they seem to link with windows update, which goes like this:

    • I get a notification, saying there are updates available, and my PC will be rebooted when "I'm not using it".
    • I open the notification, and set the reboot date to a couple days in the future, because I shut my PC down every night, so it should update at that moment, when I'm not using it (since I shut it down myself).
    • At a random time after I've done this, the BSOD appears. I'm guessing this would be the moment that Windows would've updated by itself normally.

    I have tried updating all my drivers (which I found to be the go-to solution online), but to no avail.

    I really hope you guys can help me out, because this is getting pretty annoying.

    Tim

    :)
     
    Timmiej93, May 31, 2016
    #1
  2. CaBz Win User

    Driver IRQL not less or equal L1C63x64.sys

    Hey,

    I had issues with a third-party software (and drivers) from Juniper. I remember I uninstalled and removed everything related to those drivers on my computer and it helped a lot.

    But in the end, I still downgraded to Windows 7 (for other unrelated issues).

    But thanks for the answe!
     
  3. Driver IRQL not less or equal L1C63x64.sys

    Hello,



    Welcome to Microsoft Community. I appreciate your efforts towards resolving the issue. I will certainly help you with the issue that you are facing.

    This issue arises due to a driver failure, conflict or incompatible driver on the system.

    Try the following methods and diagnose this issue further.

    Method 1: Safe Mode

    Step 1:

    To start Windows 10 in safe mode:

    1. Search for Settings from the taskbar and select it from the search results.

    2. Select
    Update & security and click on Recovery.

    3. Go to
    Advanced startup and select Restart now.

    4. After your PC restarts to the Choose an option screen, select
    Troubleshoot > Advanced options > Startup Settings >Restart.

    5. After your PC restarts, select a startup setting as Safe Mode with Networking by pressing the corresponding number.

    If the issue does not persists in Safe Mode with Networking, then perform a Clean Boot to check if any third party application is causing the issue, as Clean Boot helps in eliminating software conflicts.

    Step 2

    Put the computer in Clean Boot and check if it helps.

    By setting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue.

    How to perform a Clean Boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8

    http://support.microsoft.com/kb/929135

    Note: After Clean Boot troubleshooting step, refer to “How to reset the computer to start as usual after troubleshooting with Clean Boot” from the article.



    Method 2: Run the System File Checker tool (SFC.exe)

    System File Checker is a utility in Windows that allows users to scan for corruptions in Windows system files and restore corrupted files. It will scan your system files and to repair missing or corrupted system files in Windows.
    To run the SFC scan, refer to the Microsoft article below.

    http://support.microsoft.com/kb/929833





    Method 3:

    Update Drivers

    Refer to the following article and update all the drivers available.

    How to: Install and Update drivers in Windows
    10




    If you are unable to find the drivers for Windows 10, you may try to
    install the drivers in compatibility mode with Windows 8.1.



    Firstly download the driver from your computer's manufacturer website and then install it.

    Refer (Make older programs compatible with this version of Windows)

    http://windows.microsoft.com/en-US/windows-8/older-programs-compatible-version-windows

    Note: This link also applies to Windows 10.



    Hope this information is helpful.



    Please do let us know if you need further assistance with Windows, we will be glad to assist you.
     
    Sahil Bali, May 31, 2016
    #3
  4. axe0 New Member

    Driver IRQL not Less or Equal - l1c63x64.sys

    Please remove / disable items from the startup in taskmanager
    These programs could interfere with the boot process giving you trouble and increase the boot time.

    Please remove BullGuard and use Windows Defender as alternative
    Uninstall BullGuard Desktop Protection - Uninstall - BullGuard

    Code: Unable to load image \SystemRoot\system32\DRIVERS\afw.sys, Win32 error 0n2 *** WARNING: Unable to verify timestamp for afw.sys *** ERROR: Module load completed but symbols could not be loaded for afw.sys[/quote]



    Driver IRQL not Less or Equal - l1c63x64.sys [​IMG]
    Diagnostics Test
    Driver IRQL not Less or Equal - l1c63x64.sys [​IMG]
    System File Check
    Please try following:
    • Open an admin command prompt
    • Copy/paste "sfc/scannow" (without quotes) and press enter
    • When it finished reboot your system
    • Open again an admin command prompt
    • Enter sfc/scannow again
    If sfc/scannow says "Windows Resource Protection found corrupt files but was unable to fix some of them" after the second SFC, please upload the cbs.log file located at %systemroot%\Logs\CBS\, if the file is too large try a 3rd party uploader like dropbox, onedrive, google drive, mediafire etc.
    System File Check(SFC a.k.a. Windows Resource Protection) needs to have your system rebooted in order for sfc to try to fix the problems that it finds.
    Make a photo of SFC and post it.


    It is adviced to NOT use mixed memory, instead use a kit *Smile
    Code: [Memory Device (Type 17) - Length 34 - Handle 000dh] Physical Memory Array Handle 000bh Memory Error Info Handle [Not Provided] Total Width 64 bits Data Width 64 bits Size 4096MB Form Factor 0dh - SODIMM Device Set [None] Device Locator ChannelA-DIMM0 Bank Locator BANK 0 Memory Type 18h - Specification Reserved Type Detail 0080h - Synchronous Speed 1600MHz Manufacturer Hynix/Hyundai Serial Number Asset Tag Number Part Number HMT451S6AFR8A-PB [Memory Device (Type 17) - Length 34 - Handle 0010h] Physical Memory Array Handle 000bh Memory Error Info Handle [Not Provided] Total Width 64 bits Data Width 64 bits Size 4096MB Form Factor 0dh - SODIMM Device Set [None] Device Locator ChannelB-DIMM0 Bank Locator BANK 2 Memory Type 18h - Specification Reserved Type Detail 0080h - Synchronous Speed 1600MHz Manufacturer Kingston Serial Number Asset Tag Number Part Number 9905582-015.A00G[/quote]
     
  5. Timmiej93 Win User
    Could you give me a specific reason for this? I understand that having programs run at boot can slow stuf down, but since my BSOD is not related to booting up, I'm not quite sure why this would affect me.

    Could you (again) give me a specific reason for this? The version of Bullguard I'm using is not a trial version, or adware, it's a bought, full version, so I'd rather keep that running.



    Driver IRQL not Less or Equal - l1c63x64.sys [​IMG]
    Diagnostics Test
    Driver IRQL not Less or Equal - l1c63x64.sys [​IMG]
    System File Check[/quote]
    Please try following:
    • Open an admin command prompt
    • Copy/paste "sfc/scannow" (without quotes) and press enter
    • When it finished reboot your system
    • Open again an admin command prompt
    • Enter sfc/scannow again
    If sfc/scannow says "Windows Resource Protection found corrupt files but was unable to fix some of them" after the second SFC, please upload the cbs.log file located at %systemroot%\Logs\CBS\, if the file is too large try a 3rd party uploader like dropbox, onedrive, google drive, mediafire etc.
    System File Check(SFC a.k.a. Windows Resource Protection) needs to have your system rebooted in order for sfc to try to fix the problems that it finds.
    Make a photo of SFC and post it.

    I'm running SFC as I'm typing this. I did however run it earlier today (found the suggestion online somewhere), but it told me there were no errors found. I'll edit this bit of text if it finds trouble now though.

    Edit:
    So i ran SFC twice: First time: "Windows Resource Protection did not find any integrity violations."
    Rebooted, ran it again: "Windows Resource Protection did not find any integrity violations."

    So basically, SFC is telling us nothing.

    I'm not quite sure if this advice is a general thing you have in every message, or if it's specifically pointed at me. As far as I know, this laptop does not have mixed memory (as far as RAM goes). I bought it of the shelve, and only had a specialist fit an extra SSD for me, which should be perfectly fine.

    I do however appreciate the advice and effort you put in to this, thank you.
     
    Timmiej93, Jun 1, 2016
    #5
  6. axe0 New Member
    I'll gladly answer your questions *Smile

    1. Startup items: many aren't necessary and can be removed/disabled from the startup, it is just for improving system stability though it sometimes is also specific for BSOD troubleshooting. I often start with trying to improve system stability in many ways to reduce the chance of more problems in the future.

    2. BullGuard caused the crashes, the code I posted is about a firewall driver of Agnitum being flagged in the dumps meaning it caused the crash. Agnitum is a part of BullGuard. I understand you would want to keep it, my suggestion is only for the time of troubleshooting, after you confirm that the problem is gone you could install BullGuard again and see if a reinstallation helps as it often does *Smile

    3. The mixed memory is specific, I posted code that shows some information about your memory where we can see that your memory is from Hynix/Hyundai & Kingston + the models aren't the same (of course they aren't the same with different manufacturers). If I were you I would go back to the store and let them check the memory. The dumps show what the memory contained at the time of the crash and cannot lie about such a thing, because the system loads the information in the memory.
     
    axe0, Jun 1, 2016
    #6
  7. Timmiej93 Win User
    1. Agreed, but I do think I'm only running things I use every day, and would not like to start manually (Dropbox, f.lux, chrome extensions like a mail checker, etc.).

    2. Well that's just marvelous.. Wouldn't be the first time Bullguard gave me issues. Too bad I've got a long running license with them. I've uninstalled BG, and set up windows firewall and defender. Quite curious to see if that really does it.

    3. I just remembered I also had my RAM upgraded when I bought this laptop, so that might be what's going on here. How bad is running different makes? I've not really bumped into issues as far as I know.
     
    Timmiej93, Jun 1, 2016
    #7
  8. axe0 New Member

    Driver IRQL not Less or Equal - l1c63x64.sys

    1. It isn't a big deal fortunately as those services aren't corrupted or something *Smile

    2. I haven't seen BullGuard causing much issues, though mainly because it isn't a lot used by users around.

    3. It can depend on quite some things, some have much luck and won't notice any problems, others keep getting BSODs only because they added 1 stick which isn't even faulty.
    I've helped a user who had mixed memory as the main cause, it was very difficult to find that though. The BSODs were pointing to memory corruption but memory corruption knows various of causes so we ruled out almost all of the possibilities in an extended period of time, some possibilities were tried a few times. After a very long period of troubleshooting the removal of 1 added memory stick was the final resolution.
     
    axe0, Jun 1, 2016
    #8
  9. Timmiej93 Win User
    Well I never had much issues with BG either, until I went to a new school, which had some servers and printers online, which I couldn't access with BG enabled. BG helpdesk eventually fixed it after a long time.

    About the memory, let's hope that's not the case for me. It can be of course, but since this issue only came up later, I'm hoping it's not.

    Thank you for your help so far, I'll let you know if removing BG has fixed the issue.
     
    Timmiej93, Apr 5, 2018
    #9
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Driver IRQL not Less or Equal - l1c63x64.sys

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