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Windows 7: windows\system32\kdcom.dll  is missing or corrupt

Posted on 2011-09-30
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Last Modified: 2012-05-12
I am working on a windows 7 laptop which fails to boot due to:

File: \windows\system32\kdcom.dll   Status: 0xc0000221   Info: Windows failed to load because the kernel debugger DLL is missing or corrupt


Startup repair also fails, it detects the corrupt file but fails to repair it.
I have tried using SFC, a restore point, as well as booting off a linux disc and replacing kdcom.dll with a copy from another system that doesn't have problems.

Any ideas aside from reformatting/reinstalling windows at this point?

Thank You.
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Question by:jspaziano
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by:IanTh
ID: 36891101
try virus live cdrom

see
http://www.ampara.info/php/index.php?option=com_content&view=article&id=111:avg-live-cd&catid=30:software-technology&Itemid=85

 i bet its a virus and using a live cdrom out of windows will help
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by:jspaziano
ID: 36891121
thanks.

i did use the AVG bootable disc as well, viruses galore which were all removed but still can't fix the file that windows says is corrupted even though i know i'm replacing it with a file that's not corrupted
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by:IanTh
ID: 36891186
did you update your live cd before scanning

you may be forced to do a fresh install sorry if thats going to cause you problems
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Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
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Expert Comment

by:bloodygonzo
ID: 36891263
You can try booting to your windows 7 cd and choose to install windows. Then when prompted select upgrade. This will reinstall while preserving user data and programs.
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by:jspaziano
ID: 36891538
thanks, i will give the upgrade a shot.

the live cd was updated and found a bunch of infections which were deleted.
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jspaziano earned 0 total points
ID: 36893006
You can't do an in-place upgrade to do a repair install of windows  unless windows is in a bootable state (that's brilliant of Microsoft since a startup repair doesn't always fix the issue)


i wound up just reformatting/reinstalling
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Author Closing Comment

by:jspaziano
ID: 36915503
had to reformat the system, all repair attempts failed to resolve the problem
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Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

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