Windows 10: Can't Boot Into Windows Since Feature Update, Infinite Loop & Restarts

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  1. Posts : 17,735
    windows 10 professional version 1607 build 14393.969 64 bit
       1 Week Ago #11

    Let's see if this method can improve the boot failure.

    Sometimes fixing the registry can improve or fix boot problems.
    For this method (registry backup) to work the file sizes must be substantial.
    If the file sizes display 0 then the backup will fail and you can abort the commands.

    All of these commands are via the windows 10 iso windows advanced troubleshooting menu > command prompt > administrator: X:\windows\system32\cmd.exe > X:\Sources>

    Please use a camera or smart phone camera to take pictures and post images of the results into the thread.

    1) type or copy and paste: cd \windows\system32\config
    It should display: C:\windows\system32\config>
    2) 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 backup5122018 or something similar.
    3) type: MD backup5122018
    Copy all of the files into this new directory.
    4) type or copy and paste: copy *.* backup5122018
    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
    5) type: cd regback
    It should now display: c:\windows\system32\config\regback>
    6)type: dir
    It should display: default, sam, security, software, system etc
    All of these files must be sizeable. If it displays zeros then abort.
    7) type or copy and paste: copy *.* ..
    It should now display:
    DEFAULT
    Overwrite ..\default? (yes/no/all):
    8) type: a
    It should now display: sam, security, software, system and that the files were copied.
    9) type: exit
    10) click turn off your PC
    Remove the USB flash drive if you had changed your boot order. Otherwise you can leave it and power on your computer.
      My ComputerSystem Spec


  2. Posts : 39
    Windows 10 Education 64-bit
    Thread Starter
       3 Days Ago #12

    Ran the first command but it didn't show C:\windows\system32\config> like you said so that's all I've done for now.
    Click image for larger version. 

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    Thanks
      My ComputerSystem Spec


  3. Posts : 17,735
    windows 10 professional version 1607 build 14393.969 64 bit
       3 Days Ago #13

    Open command prompt > X:\sources> (complete the steps in the first image of post #5)
    1) bcdedit /enum
    2) bcdedit | find "osdevice"
    3) C:
    4) dir
    5) cd \windows\system32\config
    then continue with the commands in post #11
      My ComputerSystem Spec


  4. Posts : 39
    Windows 10 Education 64-bit
    Thread Starter
       3 Days Ago #14

    All right, ran the commands. No luck, PC is still restarting before anything to do with Windows loads.
    Click image for larger version. 

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      My ComputerSystem Spec


  5. Posts : 17,735
    windows 10 professional version 1607 build 14393.969 64 bit
       3 Days Ago #15

    When the computer is powered on what do you see?
    And when the computer is powered on what do you hear?
      My ComputerSystem Spec


  6. Posts : 39
    Windows 10 Education 64-bit
    Thread Starter
       3 Days Ago #16

    I press the power button and the following happens:

    The computer makes a high-pitched beep, bios screen pops up (hit del for bios settings, f8 for boot devices, etc.), screen goes black for a couple seconds, then turns blue (not a BSOD but my monitor is reading no signal input) and makes a high-pitch beep again and restarts. Repeat. However bios screen doesn't pop up after successive restarts and just goes straight to a blue screen

    All fans are spinning too
      My ComputerSystem Spec


  7. Posts : 3,360
    64bit Win 10 Pro ver 1803 Build 17134.48 and W10 Insider Build 17672
       3 Days Ago #17

    Can you get into the BIOS settings and try loading optimised defaults for your system? Sometimes this can help although I suspect it is more of a boot record issue and @zbook is working through that angle.
      My ComputersSystem Spec


  • Posts : 39
    Windows 10 Education 64-bit
    Thread Starter
       3 Days Ago #18

    I actually reset the BIOS a couple days ago because I was having trouble loading the windows USB tool. All I changed after that was putting the SATA interface back to AHCI, which is what it was before.

    Thanks phil
      My ComputerSystem Spec


  • Posts : 17,735
    windows 10 professional version 1607 build 14393.969 64 bit
       3 Days Ago #19

    So the computer is posting?
    POST troubleshooting steps
    Then it is BSOD?
    Were you able to see an error message or bugcheck?
    What changes were there after the command prompt steps?
    Are you able to boot into safe mode?
    Boot into Safe Mode on Windows 10 | Windows 10 Tutorials
      My ComputerSystem Spec


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