Windows 8 0xc000021a error

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Windows 8 0xc000021a error

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Hi,

I tried to perform a system recovery a day ago because for some reason my programs were crashing on me. I let the system recovery run and when it went to restart the computer it went to the blue screen with error 0xc000021a.
It is a dell xps 15 laptop with Windows 8 64bit. I have performed diagnostics ePSA system assessment which is a dell program and it has come back clean.
I put in the operating disc and gone to system restore which it says it needs me to select an operating system and to cancel.
I have tried to refresh but it comes up with the drive is locked.
I have tried automatic repair but it comes up with error it cannot perform operation.
I have tried to install windows but it comes up with needing a driver for dvd, usb or something before it can continue.
Not sure what to do here. It is just a loop of opening dell screen then blue screen. I have the two options of F2 setup and F12 boot options.
I want to try and keep my files as this has occurred while I am traveling  for 8 months!
Any help would be great
Matt
All Replies
  • Hello Matt,

    Please try the suggestions mentioned in this thread from Microsoft Community and see how it goes. 

    Hope this helps!

    Thanks & Regards
    Allan D
    #iworkfordell
    To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region USIndia. For Dell support videos click Here.

    If a post answers your question, please click "Yes".

  • Hi,

    i cannot do a clean boot as I cannot access windows desktop. I get the initial dell logo, and it then goes to the blue error screen.

    The safe mode has not worked. The same thing happens.

    Any other suggestions? 

    i have tried refresh, automatic repair, and system restore with the operating disc but nothing works. I have files on it and don't want to do a wipe..

    it also said my drive is locked when I try to refresh it.

  • Hello Matt,

    In this situation, I would suggest you to try Windows 8 Reset. That is resetting the computer to it's original factory state. 

    **Note: Please ensure to back up all the data from your computer before resetting the operating system to the factory state as it would erase everything from your computer.

    Hope this helps!

    Thanks & Regards
    Allan D
    #iworkfordell
    To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region USIndia. For Dell support videos click Here.

    If a post answers your question, please click "Yes".

  • But how can I back up all the files if I cannot access wIndia's desktop? It is a laptop so it is not as easy to pull out the hard drive and attach to another computer.

  • Sorry, "access windows desktop"

  • Hello Matt,

    We recommend backing up all data before you restore the computer to its factory settings. In case you have any important data which you have not backed up, you can back them up by removing the hard drive from your computer and connecting it to another one. Please refer to the service manual on how to remove the hard drive from the computer: http://bit.ly/10t6PfI 

    If you are uncomfortable in removing the hard drive, you may take it to a local store/ technician. In case you do not have any important data, you can continue with the Windows 8 Reset. 

    Hope this helps!

    Thanks & Regards
    Allan D
    #iworkfordell
    To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region USIndia. For Dell support videos click Here.

    If a post answers your question, please click "Yes".