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
    2015-02-13T11:22:48+00:00

    Hi

    I used advanced boot menu on system startup options pressing F8 just after turning on my laptop. when advanced boot menu showed up, there are some options you can select. i selected "force drivers to have signature disabled..." and boot continued and the problem was gone.

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  2. Anonymous
    2015-02-12T07:38:51+00:00

    Hi, I am using the Win 10 preview 9926.  This particular error has hit several times.  Normally I simply do a normal reboot and it clears itself.  This happens to me with the preview a couple of time a month, sometime more.

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  3. Anonymous
    2015-01-19T21:13:39+00:00

    Hi Yuri,

    Thanks for this. It worked for me on an HP G70 laptop that had been upgraded from Vista to Win7 to Win8 many months ago and would not start a few days ago after a  Windows update. I tried other suggestions in this forum without success but this did the trick. Thanks again!

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  4. Anonymous
    2015-01-17T16:39:30+00:00

    Hi..

    how you did it? I have the same situation. How you "force drivers to have signature disabled"?

    thanks.

    Z

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  5. Anonymous
    2015-01-16T08:23:12+00:00

    Hey Carl

    Actually i don't know any alternative way to boot without driver signature enforcement.

    Buy if you have problems with your tablet's keyboard, try connecting a hardware keyboard to tablet and press boot keys using that.

    I hope it help.

    Good luck

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