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Windows 10 boot error 0xc00021a


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#1 SheepForges

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Posted 05 December 2016 - 08:33 AM

So I have this boot error and have tried all of the steps I can find online but no luck. I have tried:

  • Using the windows repair system
  • Resetting bios
  • sfc /scan now in cmd (I get Windows Resource Protection could not perform the requested operation
  • Disabling signature drivers

 

Its also windows 10 so I have no boot disk..

I have no idea how to fix this... Thanks



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#2 usasma

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Posted 06 December 2016 - 07:44 AM

You can make a Windows 10 boot disk using the free tool here:  https://www.microsoft.com/en-us/software-download/windows10/

If you're not able to get into Windows, please tell us how far in the boot process you are able to go.

 

If you're able to get into Windows, please run this report collecting tool so that we can provide a complete analysis: (from the pinned topic at the top of the forum)   http://www.bleepingcomputer.com/forums/t/576314/blue-screen-of-death-bsod-posting-instructions-windows-10-81-8-7-vista/
FYI - I don't often use the Perfmon report, so if it doesn't work please just let me know.
NOTE:  On problem systems it can take up to 20 minutes for the log files to complete.  Please be patient and let it run.

If you still have problems with it running, there's an alternate tool here (direct download link):  https://github.com/blueelvis/BSOD-Inspector/releases/download/1.0.5/BSODInspector-1.0.5.exe

NOTE:
Please zip up the (.ZIP) files - do not use .RAR or other compression utilities. 
.ZIP is the type file that can be uploaded to the forums.

 


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