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Windows 7: BSOD c000021a Fatal Error. Pls Help

09 Sep 2014   #1
Bolvua

Windows 7 Ultimate x64
 
 
BSOD c000021a Fatal Error. Pls Help

Hello Guys.
I have this problem a few days. I tried a lot of thinks what I found on internet but nothing works,
I m really tired. Please help me. I need my computer back, because I have a lot programs in there.

I think that this problem started when I connect second monitor in HDMI. Is it possible?
I have AMD/ATI HD5670.

Full sub.
STOP: c000021a {Fatal System Error}
The verification of a knownDLL failed. system process terminated unexpectedly with a status of 0xc0000020 (0x001f9660 0x00000000)
The system has been shutdown.


My System SpecsSystem Spec
.
09 Sep 2014   #2
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Does it not boot to windows at all? If so, try Advanced Boot Options > Last Know Good Configuration (advanced). Does it boot now?

Quote   Quote: Originally Posted by Bolvua View Post
I think that this problem started when I connect second monitor in HDMI. Is it possible?
Yes, any change in the configuration may cause it.

Sometimes this issue may occur during running the computer and the user can boot to windows back. If so, post it following the Blue Screen of Death (BSOD) Posting Instructions.
My System SpecsSystem Spec
09 Sep 2014   #3
Bolvua

Windows 7 Ultimate x64
 
 
Not working

Yes I tried this. And still BSOD.
I also tried restore from restore point but repaire saying no restore point found on computer
My System SpecsSystem Spec
.

09 Sep 2014   #4
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

We are still in dark at the very basic.

Does the BSOD happen during boot and makes the system unbootable at all? Or does the BSOD happen during running the computer?

Not working is not a reply to get any information from; and system restore was not suggested.
My System SpecsSystem Spec
10 Sep 2014   #5
Bolvua

Windows 7 Ultimate x64
 
 

So the BSOD happen during boot and makes the system unbootable. I tried safe mode and also BSOD.

Sorry for my low english.
My System SpecsSystem Spec
10 Sep 2014   #6
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by Bolvua View Post
So the BSOD happen during boot and makes the system unbootable. I tried safe mode and also BSOD.

Sorry for my low english.
I would request gregrocker to guide you.
My System SpecsSystem Spec
10 Sep 2014   #7
gregrocker

 

Work through the steps for Troubleshooting Windows 7 Failure to Boot including the hardware tests. Report back as you go as there may be other steps indicated.
My System SpecsSystem Spec
10 Sep 2014   #8
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Thank you Greg.
My System SpecsSystem Spec
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 BSOD c000021a Fatal Error. Pls Help




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