Windows 10: How to fix 0xc000021a, BSOD?

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  1.    1 Week Ago #11

    Code:
    0xC000021A:    WINLOGON_FATAL_ERROR (12.02.2017 13:07:02) [Windows 10] 
     
    CAUSED BY:     memory_corruption    
     
    PROCESS:       smss.exe 
     
    Usual causes:  User-mode device driver, system service, or third-party application, Mismatched system files
    
    1: kd> da ffffb6096886a5d0
    ffffb609`6886a5d0  "initial session process or"
    1: kd> db ffffb6096886a5d0
    ffffb609`6886a5d0  69 6e 69 74 69 61 6c 20-73 65 73 73 69 6f 6e 20  initial session 
    ffffb609`6886a5e0  70 72 6f 63 65 73 73 20-6f 72 00 00 00 00 00 00  process or......
    ffffb609`6886a5f0  03 03 04 03 4d 6d 53 6d-00 00 00 00 00 00 00 00  ....MmSm........
    ffffb609`6886a600  20 79 7b 20 0e a1 ff ff-03 00 00 00 00 00 0c 00   y{ ............
    ffffb609`6886a610  00 00 00 00 00 00 00 00-8c 22 00 00 00 00 00 00  ........."......
    ffffb609`6886a620  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
    ffffb609`6886a630  04 03 17 03 4d 50 73 63-00 00 00 00 00 00 00 00  ....MPsc........
    ffffb609`6886a640  00 00 00 00 00 00 00 00-00 5b 9b 1b 0e a1 ff ff  .........[......
    
    1: kd> da ffffb6096886a5d0
    ffffb609`6886a5d0  "initial session process or"
    maybe someone can interpret this.
    Last edited by BSODHunter; 1 Week Ago at 07:32.
      My System SpecsSystem Spec

  2.    1 Week Ago #12

    BSODHunter said: View Post
    Code:
    0xC000021A:    WINLOGON_FATAL_ERROR (12.02.2017 13:07:02) [Windows 10] 
     
    CAUSED BY:     memory_corruption    
     
    PROCESS:       smss.exe 
     
    Usual causes:  User-mode device driver, system service, or third-party application, Mismatched system files
    It says usual causes are drivers or mismatched system files right since memtest+ gave 11passes with zero error[18 hours].
    What should I do now?
    Also how can both ram be damaged.
    PC works perfectly when I disable driver signature enforcement. And Live usb OSs is correctly working . Why?
    Code:
    initial session process or
    
    I already got that in atleast 30 minidumps but no details on web.
    Pls advise.
    Last edited by Anutrix; 1 Week Ago at 08:44.
      My System SpecsSystem Spec

  3. axe0's Avatar
    Posts : 11,062
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro
       1 Week Ago #13

    BSODHunter said: View Post
    Code:
    0xC000021A:    WINLOGON_FATAL_ERROR (12.02.2017 13:07:02) [Windows 10] 
     
    CAUSED BY:     memory_corruption    
     
    PROCESS:       smss.exe 
     
    Usual causes:  User-mode device driver, system service, or third-party application, Mismatched system files
    
    1: kd> da ffffb6096886a5d0
    ffffb609`6886a5d0  "initial session process or"
    1: kd> db ffffb6096886a5d0
    ffffb609`6886a5d0  69 6e 69 74 69 61 6c 20-73 65 73 73 69 6f 6e 20  initial session 
    ffffb609`6886a5e0  70 72 6f 63 65 73 73 20-6f 72 00 00 00 00 00 00  process or......
    ffffb609`6886a5f0  03 03 04 03 4d 6d 53 6d-00 00 00 00 00 00 00 00  ....MmSm........
    ffffb609`6886a600  20 79 7b 20 0e a1 ff ff-03 00 00 00 00 00 0c 00   y{ ............
    ffffb609`6886a610  00 00 00 00 00 00 00 00-8c 22 00 00 00 00 00 00  ........."......
    ffffb609`6886a620  00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00  ................
    ffffb609`6886a630  04 03 17 03 4d 50 73 63-00 00 00 00 00 00 00 00  ....MPsc........
    ffffb609`6886a640  00 00 00 00 00 00 00 00-00 5b 9b 1b 0e a1 ff ff  .........[......
    
    1: kd> da ffffb6096886a5d0
    ffffb609`6886a5d0  "initial session process or"
    maybe someone can interpret this.
    You may want to read my blog post, it explains a few things about smss.exe and may help you to understand it.
    0x21A Analysis - BSOD Analysis
      My System SpecsSystem Spec

  4. axe0's Avatar
    Posts : 11,062
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro
       1 Week Ago #14

    Currently I have reasons to believe that your HDD may be the cause of the issue, it would at least explain why you're able to run live operating systems.

    How old is your hardware?
    If it isn't too old, like not older than a few years, many things to repair the boot stuff won't work as they are meant for the old generation of booting.

    Have you performed any tests on your HDD?
      My System SpecsSystem Spec

  5.    1 Week Ago #15

    axe0 said: View Post
    Currently I have reasons to believe that your HDD may be the cause of the issue, it would at least explain why you're able to run live operating systems.

    How old is your hardware?
    If it isn't too old, like not older than a few years, many things to repair the boot stuff won't work as they are meant for the old generation of booting.

    Have you performed any tests on your HDD?
    No, I don't remember doing it.
    Once I had done quick test in Oct16.
    No errors as I remember so maybe I ruled it out.
    Pls recommend HDD tests.
    Have 1TB HDD and I can't keep PC for too long this time so faster options are better.
      My System SpecsSystem Spec

  6. axe0's Avatar
    Posts : 11,062
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro
       1 Week Ago #16




    How to fix 0xc000021a, BSOD? Diagnostics Test How to fix 0xc000021a, BSOD?
     HDD TEST

    Note   Note
    Please run HDTune first, in the order posted!

    Run HDTune to
    • check the health,
    • scan for errors, no quick scan but full scan
    • run a benchmark.

    It may take some time, but please take the time you need to perform it properly.
    When above is done please make screenshots of the following
    • the health,
    • the error scan,
    • the benchmark incl. following
      • transfer rate,
      • access time,
      • burst rate,
      • cpu usage.


    Run SeaTools DOS to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use - Windows 7 Help Forums
    Run the long test.
    Note   Note
    Do not run SeaTools on an SSD as the results will be invalid.

    Make a photo of the result and post it.

    Run chkdsk
    Disk Check - Windows 7 Help Forums
    Use option TWO with parameter /r
    Upload the chkdsk log Check Disk (chkdsk) - Read Event Viewer Log - Windows 7 Help Forums
      My System SpecsSystem Spec

  7.    1 Week Ago #17

    axe0 said: View Post


    How to fix 0xc000021a, BSOD? Diagnostics Test How to fix 0xc000021a, BSOD?
     HDD TEST

    Note   Note
    Please run HDTune first, in the order posted!

    Run HDTune to
    • check the health,
    • scan for errors, no quick scan but full scan
    • run a benchmark.

    It may take some time, but please take the time you need to perform it properly.
    When above is done please make screenshots of the following
    • the health,
    • the error scan,
    • the benchmark incl. following
      • transfer rate,
      • access time,
      • burst rate,
      • cpu usage.



    Run SeaTools DOS to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use - Windows 7 Help Forums
    Run the long test.
    Note   Note
    Do not run SeaTools on an SSD as the results will be invalid.

    Make a photo of the result and post it.

    Run chkdsk
    Disk Check - Windows 7 Help Forums
    Use option TWO with parameter /r
    Upload the chkdsk log Check Disk (chkdsk) - Read Event Viewer Log - Windows 7 Help Forums
    Thx.
    Just started hdtune pro error scan .
    Will do other tests after that.
    Please note I have 931GB Western Digital WDC WD10EZEX-08M2NA0 (SATA). So is the seatools universal or not?
      My System SpecsSystem Spec

  8.    1 Week Ago #18

    yes its universal
      My System SpecsSystem Spec

  9.    1 Week Ago #19

    axe0 said: View Post


    How to fix 0xc000021a, BSOD? Diagnostics Test How to fix 0xc000021a, BSOD?
     HDD TEST

    Note   Note
    Please run HDTune first, in the order posted!

    Run HDTune to
    • check the health,
    • scan for errors, no quick scan but full scan
    • run a benchmark.

    It may take some time, but please take the time you need to perform it properly.
    When above is done please make screenshots of the following
    • the health,
    • the error scan,
    • the benchmark incl. following
      • transfer rate,
      • access time,
      • burst rate,
      • cpu usage.

    Here is the HD Tune report.
    Click image for larger version. 

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    Also I have System Reserved partition with odd files in it.
    Had Remix OS with YUMI in USB which stored lot of files in it maybe[don't know why].
    Can I delete it.
    Click image for larger version. 

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    Thx again.
    Will post next tests soon.
      My System SpecsSystem Spec

  10. axe0's Avatar
    Posts : 11,062
    Windows 10 Pro / Windows 10 TP / Windows 8.1 Pro / Windows 7 Pro
       1 Week Ago #20

    The system reserved partition is normally not visible to the user, because it contains important files. If I remember correctly, this partition is used for the recovery and/or boot process.

    That this partition is visible means that your partitioning is screwed up more than I had hoped. (It also means that your system is using the old generation of booting)
    There may be a chance that the partitioning problem may be fixed, but if you'd like to get it fixed without a clean install then we'll need someone who is more experienced in this than I am in this.
      My System SpecsSystem Spec


 
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