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Marc3703
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Stop Code Error OxC000021A

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HP Pavilion 23-g025d All-in-On
Microsoft Windows 10 (64-bit)

Computer unable to start. Stop Code error OxC000021A. Have tried 

1) System Repair - failed.

2) System start up setting  - safe mode - end up with same error code.

                                       - F7    - - same-

3) System restore also end up with same error code.

 

Please kindly help. 

 

Thanks.

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mdklassen
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Other people on this forum have reported the same problem:

 

but none of the above provided a solution. 

 

Instead, see: 

https://answers.microsoft.com/en-us/windows/forum/windows_8-update/windows-8-pro-cannot-boot-error-0...

 

which reads:

 

 ... to fix this, I tried safe mode but it failed to boot. Finally I tried to boot with "force drivers to have signature disabled" and it worked.

 

Give that a try, and report back.

 

If it works, use the Windows "System File Checker" (SFC) utility to verify that none of the system-files have been corrupted (or maybe virus-infected).

 

 

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Marc3703
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Yes. I already did that. Press F7 after startup Options. Didn't work.

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mdklassen
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> Yes. I already did that. Press F7 after startup Options. Didn't work.

 

Thanks for the additional information.

 

Of course, when all else fails, your "last resort" is:

 

1. Buy a new disk-drive (consider upgrading to a SSD, or, minimally, replacing your "expired-warranty" disk-drive)

2. Remove the current disk-drive

3. Connect the new disk-drive

4. Reinstall Windows onto the new disk-drive

5. Run Windows Update, repeatedly

6. Connect the old disk-drive as a "slave" disk-drive, and copy all your personal files from "old" to "new"

7. Reinstall your applications (MS Office? Adobe Reader? GIMP? Audacity? SPECCY?)

8. Done.

 

 

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