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?