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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?
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I have the exact same problem, i had my phone connected to my laptop, i was moving some files inside the phone, when all of a sudden the laptop started lagging it moved the files in 0 bytes per second, so i restarted the laptop and got that blue screen error. just wondering does anyone have any solutions for this, Has anyone tried to install windows 7 then back to w8?
Amir's fix works. I just used it. Thanks buddy. Aronhugos' fix is garbage. Start by forcing drivers to have signature disabled within win pro 64 bit boot options and I added a step and ran advanced system care pro 6.3 to clean up any garbage. WORKING. Came up with some misc errors that I need to fix but I'm in my PC and that's what matters. Normally I would never comment on any posts like these because people leave nothing but garbage tips or try to sell their business. Thanks again Amir
Resolve this error by replacing files "shel32.dll" and "timedate.сpl" (folder "system32") on the original.
In my case, the error caused by replacing system files third party software.
Maybe will help you.
Im having the same issue, I have a brand new HP Ultrabook that already had windows 8 installed. I have had several issues recently though. Everytime having the code 0xC000021a, I have reset my laptop several times and im am so tired of doing this and its driving me insane. It told me something about fixing a disc drive (which I don't have, I have to get a usb plugged in disc drive to download discs). If someone could give an up to date Windows 8 answer that would be great, since all I find is windows xp fixes. And again I had windows 8 already on my laptop when bought, so I don't think it has anything to do with upgrading from windows 7, at least for me
I have reset SEVERAL times and the problem reoccurs, and the problem wont let me refresh or system restrore. I am SOOOOOO tired of resetting my laptop
