Windows 8 Pro cannot boot - Error 0xC000021a

Anonymous
2012-11-25T18:10:13+00:00

Hi

I upgraded my son's laptop from Windows 7 to Windows 8 Pro. I has been working fine for a few weeks. But now when booting It halts iwth the error code 0xc000021a. I have tried the following options

Refresh - this fails with the error 0xc000021a

System Restore - this fails with 0xc000021a

Safe mode boot does not work

I can start the cmd console

Any suggestions as to how to proceed?

Windows for home | Previous Windows versions | Performance and system failures

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  1. Anonymous
    2014-09-30T10:55:46+00:00

    No. Took me three tries to get the syntax right,but it worked and nothing was lost.

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  2. Anonymous
    2014-09-26T06:37:21+00:00

    I have a Toshiba laptop and nothing happens when I push f8 or f5. I can't get to the recovery console either, turning it on and off three times was not only pointless but aggravating. Does anyone know if this is strictly a windows 8.1 problem? Does it happen with windows 7?

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  3. Anonymous
    2014-09-21T02:55:31+00:00

    My question to anyone who had this fixed. Were any of your files or any of your private files erased??

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  4. Anonymous
    2014-09-15T23:38:06+00:00

    I followed all the way here and got the 'unable to acces the image' error. So here's the fix for Yuri's fix to work. 

    Note in which letter your windows was mounted by checking cmd's current path. Mine was E for instance. Then replace /image:C\ with /image:E:\ (note the 2nd : ).

    Hopefully it will work just like mine! Thanks Yuri!

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  5. Anonymous
    2014-08-23T09:22:48+00:00

    DISM isnt working for me. It keeps showing me unable to acces the image.

    My wibdows 8 computer did a critical update and the next day I turn it on and got this same error, last time I updated I got same error. I want a permanent fix to this cuz im sick of reinstalling windows every few months when microsoft decides they want to mess up my computer. This is getting old fast.

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