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
    2013-03-11T15:29:04+00:00

    I'm thinking that Windows 8 is a very beta version. Last errors that i've received:

    I'm working normally , famous blue screen appears (more beautiful in windows 8 ;-) ) : KERNEL_SECURITY_CHECK error.

    After that, the only way to start my machine is with windows 8 installation disk.

    I hope, that microsoft resolve this problems as soon as possible, please...

    Best regards.

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  2. Anonymous
    2013-05-18T15:11:18+00:00

    I'm having the same problem. I've tried several times just rebooting computer. I went ahead and started a system refresh I think. Now I am just staring at the windows 8 logo on a black screen. If it helps I was playing COD MW3 when my computer froze. I restarted it then I got the error. Any tips?

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  3. Anonymous
    2013-06-05T08:23:37+00:00

    Aaron's suggestion has not worked for me :(

    I hade updated to windows 8 pro from windows 7 a couple of days ago, and suddenly today it has crashed. I haven't found a single solution to this problem yet. Need help!

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  4. Anonymous
    2013-06-22T13:37:23+00:00

    “自动修复”无法修复你的电脑

    按“高级选项”以尝试使用其他选项来修复你的电脑，或者按“关机”关闭你的电脑

    日志文件：C:\Windows\System32\Logfiles\Srt\SrtTrail.txt

    I did not do anything.

    But blue screen occurred after a normal restart.

    Sometimes my computer cannot be shut dwn and I have to press the power button for a few seconds to force it be switched off.

    Nothing happened in the past few months.

    But this time my computer cannot boot at all.

    What should I do?

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  5. Anonymous
    2013-06-25T12:17:42+00:00

    in advance option during w8 automatic repair

    refresh pc....or reset

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