Winnsi.dll errors in Windows 7

The attached error pops up with any attempt to run anything in my Windows 7 machine. I have a clean winnsi.dll file but I get permission blocks when I try to overwrite the problem winnsi.dll file. I have tried everything I could find to set the permissions and nothing works. I see online that I should be able to just copy it and overwrite the problem file. I have purchased and run registry cleaners and it still pops up.

I understand this file is used by most if not all programs. I can't even launch the Task Manager, cannot access any external devices or an internet connections. I also lost my network. All seems to be related to this file. Suggestions?

 winnsi.dll error message
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David Johnson, CD, MVPRetiredCommented:
1. run msconfig and diagnostic startup.
2. run sfc /scannow 2x or until it returns no errors.
weknowjackAuthor Commented:
Thanks but how/where would I do that?
weknowjackAuthor Commented:
I found msconfig but it has many options. do I only check diagnostic startup? Anyway, that's what I did and restarted. Then did the sfc from a command prompt and the attached shows what it returned:sfc result
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David Johnson, CD, MVPRetiredCommented:
start cmd  right click on the cmd icon and select run as administrator

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weknowjackAuthor Commented:
Ok, did that, now this - attached

scannow result
Rob LeaverSr. Network & Server EngineerCommented:
Are you able to boot into safe mode? If so, do you still receieve the same errors?
weknowjackAuthor Commented:
I had to enable the Windows Module Installer. Now sfc is running, currently at 25%. We'll see what's next.
weknowjackAuthor Commented:
It worked. the error is gone. Thanks much, David.
weknowjackAuthor Commented:
this got it fixed. read the entire thread.
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Windows 7

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