Windows 10: Critical System driver is missing or corrupt. Automatic repair fails. Solved

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  1.    29 Dec 2017 #11

    Yes i ran on D drive.
    Results of above commands.

    Click image for larger version. 

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    Performing the tasks posted by Vijay now.
      My ComputerSystem Spec

  2.    29 Dec 2017 #12

    Performing these tasks mentioned by Vijay, I get different results than what he posted.

    I get 'Total identified Windows installations: 1, instead of 0

    and the export command 'The store export operation has failed. The requested system device cannot be found.'

    Should i still continue ?
      My ComputerSystem Spec


  3. Posts : 20,892
    windows 10 professional version 1607 build 14393.969 64 bit
       29 Dec 2017 #13

    In command prompt type: bcdedit | find "osdevice"
    For the drive with the partition type the drive letter for example C: or D:
    Then type dir
    The proper drive would display: perflogs, program files, program files (x86), users, windows, etc
      My ComputerSystem Spec

  4.    29 Dec 2017 #14

    e: drive has all the perflogs, program files, program files (x86), users, windows, etc. so changed the command to bcdedit /export e:\bcdbackup
    but it still gives...
    'The store export operation has failed. The requested system device cannot be found.'
      My ComputerSystem Spec


  5. Posts : 20,892
    windows 10 professional version 1607 build 14393.969 64 bit
       29 Dec 2017 #15

    Which steps did you perform in the link that ztucker posted?

    If that does not work then he may have other options for you to try.

    If the above does not work then you can try the registry repair.
      My ComputerSystem Spec

  6.    29 Dec 2017 #16

    just steps 1 to 4
      My ComputerSystem Spec

  7.    29 Dec 2017 #17

    theres no boot folder on e:\
      My ComputerSystem Spec


  8. Posts : 20,892
    windows 10 professional version 1607 build 14393.969 64 bit
       29 Dec 2017 #18

    The following command scans integrity of all protected Windows system files and repairs files with problems when possible.


    Code:
    Sfc /Scannow /OFFBOOTDIR=D:\ /OFFWINDIR=D:\Windows
    sfc /scannow /offbootdir=f:\ /offwindir=f:\windows




    Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.



    SFC /SCANNOW : Run in Command Prompt at Boot - Windows 7 Help Forums
    Last edited by zbook; 29 Dec 2017 at 22:41.
      My ComputerSystem Spec

  9.    29 Dec 2017 #19

    ok the sfc completed and the results are..

    Click image for larger version. 

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      My ComputerSystem Spec


  10. Posts : 20,892
    windows 10 professional version 1607 build 14393.969 64 bit
       29 Dec 2017 #20

    Overnight try the sfc command again in case these steps do not fix it.

    Post an image of the results for these commands:

    bootrec /scanos

    bcdedit /enum

    Post images as you progress in these steps:

    1) boot to the Windows 10 iso
    2) it may take 5 minutes displaying the windows icon
    3) Use the default settings for language, time, currency, and keyboard
    4) click next
    5) In the left lower corner click Repair your computer
    6) click troubleshooting
    7) click startup repair (it is expected to fail)
    8) click system restore (it is expected to fail)
    9) click command prompt
    You should see a pop up with title bar: Administrator: X:\windows\system32\cmd.exe
    This is the registry backup method:
    For each step you must see sizeable file sizes for this to work.
    If you see zeros the method will fail.
    The command: dir
    will be used each step to make sure you are in the proper location and check the size of the files
    10) type: C:
    11) dir
    12) type: D:
    13) dir
    Choose the C: or the D: drive to proceed. It should be the windows drive and not the USB drive.
    14) type: bcdedit | find "osdevice"
    This should display the location of the partition and in most cases is the location of the affected drive.
    For this post I will use C: however you should pick the drive letter that you found that has the windows files on your computer.
    The proper drive will display: perflogs, program files, program files (x86), users, windows, etc
    15) type or copy and paste: cd \windows\system32\config
    It should display: C:\windows\system32\config>
    16) type: dir
    It should display: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk, journal, regback, systemprofile txr, etc.
    All of the file sizes should be sizeable. If it displays zeros then abort.
    Make a new directory and name it backup or something similar.
    17) type: MD backup
    Copy all of the files into this new directory.
    18) type or copy and paste: copy *.* backup
    It should now display: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk indicating the files were copied.
    Change the directory to regback
    19) type: cd regback
    It should now display: c:\windows\system32\config\regback>
    20)type: dir
    It should display: default, sam, security, software, system etc
    All of these files must be sizeable. If it displays zeros then abort.
    21) type or copy and paste: copy *.* ..
    It should now display:
    DEFAULT
    Overwrite ..\default? (yes/no/all):
    22) type: a
    It should now display: sam, security, software, system and that the files were copied.
    23) type: exit
    24) click turn off your PC
      My ComputerSystem Spec


 
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