1.    3 Weeks Ago #1
    Join Date : Sep 2016
    Posts : 1
    Windows 10 64 Bits

    Windows Boot Manager - Failed

    Click image for larger version. 

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    Can anyone tell me how to resolve a Windows failed to start issue on a Windows 10 computer?

    Status: 0xc0000225
    Info: A required device isn't connected or can't be accessed.

    The computers worked fine for a couple days. After the end-users powered off and turn it back on the next day they received the Windows Boot Manage screen and could not get back into the computer.

    Ran a repair (could not fix), diagnostic test (everything passed), /FIXMBR (no change), and Power Off test (no change).

    Please HELP!!!!
    Last edited by ReginaM; 3 Weeks Ago at 12:38.
      My System SpecsSystem Spec

  2.    3 Weeks Ago #2
    Join Date : Feb 2016
    Maribor, Slovenia
    Posts : 2,458
    Windows X (various flavours)

    Hi ReginaM and welcome to TenForums!

    What message did you get when Repair couldn't fix problem?

    You mentioned /Fixmbr, so you reached repair command prompt.

    From Brinks' tutorials:
    Run Startup Repair again:
    Click/tap on Advanced options, and go to step 2 above. Sometimes it may take running Startup Repair up to 3 times and restarting the PC each time to fix the startup issue.
    There are some reports, that this kind of error can be caused by USB devices. Try disconnecting as many as you can...
      My System SpecsSystem Spec

  3.    3 Weeks Ago #3
    Join Date : Jul 2014
    San Jose, California
    Posts : 1,870
    Ubuntu14.04x64 MintMate17x64 Win10Prox64

    Ran a repair (could not fix), diagnostic test (everything passed), /FIXMBR (no change), and Power Off test (no change).
    First, you need to find out if Windows was installed using MBR partition scheme to use /fixmgr. If Windows was installed using GPT partition scheme, you cannot use it to fix boot problem.

    Your best bet is to download: Macrium Reflect Free. Install it on another PC, create a Macrium Rescue USB stick, boot up from it, click Restore tab then click on "Fix Windows Boot Problems"
    as shown below:
    Click image for larger version. 

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      My System SpecsSystem Spec

  4.    3 Weeks Ago #4
    Join Date : Jun 2015
    Posts : 988
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    Did you try a cold power off i.e. disconnect/unplug the PC from the mains and hold down the power on button for 30s? Is there another disk connected with an active partition since this can confuse the boot process? Use MiniTool Partition Wizard to check and change active partitions to inactive.
      My System SpecsSystem Spec


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