Boot loop after update no safe mode option-repair fails- restore fails

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  1. Posts : 56
    Win 10 64bit
       #1

    Boot loop after update no safe mode option-repair fails- restore fails


    About a week ago update keep saying an update failed due to lack of drive space so I fixed the issue. After that the update went through but keep failing and the pc would boot and remove the update. The pc was working normally otherwise. I have been extremely busy with work so ignored the issue hoping to resolve it this weekend however yesterday I came home to the pc endlessly rebooting. Just before the reboot the windows logo appears and then a message pops up saying restoring your previous version of windows. I have read many threads about the issues people are having but didn't find any that offered up a fix for mine. Spoke with MS Support and the best they could do with tell me to reinstall the OS.

    Win10 64bit
    I5 CPU
    Gigabyte mobo

    System Restore fails
    Startup repair fails
    Go back to previous build fails
    No option to get into safe mode that I can find

    I can boot from Ubuntu CD and pc is working properly.

    Can anyone offer any ideas? Thank you in advance.
      My Computer

  2. FreeBooter's Avatar
    Posts : 3,183
    Windows 10 Pro 64-bit
       #2

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.


    Please execute below command and reboot your computer to see issue resolves.


    Code:
    DISM    /Image:C:\     /Cleanup-Image   /RevertPendingActions
    Please replace partition letter C: 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.
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  3. Posts : 56
    Win 10 64bit
    Thread Starter
       #3

    Using win10 64bit install disk to get to cmd prompt bcdedit results in:

    The boot configuration data store could not be opened.
    The requested system device cannot be found.
      My Computer


  4. Posts : 56
    Win 10 64bit
    Thread Starter
       #4

    Forgot to mention that I had previously run bootrec /fixmbr -it reported success but still continued to boot loop.
      My Computer

  5. FreeBooter's Avatar
    Posts : 3,183
    Windows 10 Pro 64-bit
       #5

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below commands into Command Prompt and press Enter key.

    Following commands will repair Master Boot Record (MBR), Boot Sector and BCD Store.


    Code:
    Bootrec /FixMbr
    
    Bootrec  /FixBoot
    
    Bootrec /ScanOS
    
    Bootrec  /RebuildBcd
      My Computer


  6. Posts : 56
    Win 10 64bit
    Thread Starter
       #6

    bootrec /fixmbr = success
    bootrec /fixboot =success
    bootrec /scanos =success 1 Windows installation E:\Windows
    bootrec /rebuildbcd =scanned and found E:\Windows then asked to add to boot list. I said Yes and it responded with "The requested system device cannot be found"
      My Computer


  7. FreeBooter's Avatar
    Posts : 3,183
    Windows 10 Pro 64-bit
       #7

    We need to rebuild BCD data store.

    Since the BCD store exists and lists a Windows installation, you'll first have to "remove" it manually and then try to rebuild it again. At the prompt, execute the bcdedit command as shown and then press Enter:

    bcdedit /export C:\bcdbackup

    The bcdedit command is used here to export the BCD store as a file: bcdbackup. There's no need to specify a file extension.

    The command should return the following on screen:

    The operation completed successfully.

    Meaning the BCD export worked as expected.

    Execute below command to point Command Prompt to C: drive.

    c:

    At this point, you need to adjust several file attributes for the BCD store so you can manipulate it. At the prompt, execute the attrib command exactly like this:

    attrib c:\boot\bcd -h -r -s

    What you just did with the attrib command was remove the hidden, read-only, and system attributes from the file bcd. Those attributes restricted the actions you could take on the file. Now that they're gone, you can manipulate the file more freely - specifically, rename it.

    To rename the BCD store, execute the ren command as shown:

    ren c:\boot\bcd bcd.old

    Now that the BCD store is renamed, you should now be able to successfully rebuild it.

    Try rebuilding the BCD again by executing the following, followed by Enter:

    bootrec /rebuildbcd

    Restart your computer after rebuilding the BCD store.
      My Computer


  8. Posts : 56
    Win 10 64bit
    Thread Starter
       #8

    bcdedit /export =failed the requested system device cannot be found after trying to use both C and E as the drive.

    Since I can see the files and folders when booted with Ubuntu can I do this step manually?
      My Computer


  9. Posts : 56
    Win 10 64bit
    Thread Starter
       #9

    Booting from the Ubuntu disk I have done a search of the SSD containing Windows and find the following locations contain a file named "BCD":

    $Windows.~BT/Sources/Rollback/Boot last modified yesterday
    $GetCurrent/media/boot last modified in Sept
    $Windows.~BT/boot last modified in Sept
    $Windows.~BT/Efi/microsoft/boot last modified in Sept
    $Windows.~BT/Sources/Rollback/BootStat last modified yesterday
      My Computer

  10. FreeBooter's Avatar
    Posts : 3,183
    Windows 10 Pro 64-bit
       #10

    From Command Prompt execute below commands:


    Code:
    Diskpart
    
    List disk 
    
    List volume
    

    If yo can please post a screenshot of these commands and there outputs.
      My Computer


 
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