MFC.71DLL was not found

If I try to open Pinnacle Studio or install Roxio software the following message comes up:

“ This application has failed to start because MFC.71DLL was not found. Re-installing the application may fix this problem.”

However MFC.71DLL does exist in C:\WINDOWS\system32. A friend gave me a copy of his MFC.71DLL which I tried to drag into that folder. But the following message came up:

“Cannot move mfc71; A file with the name already exists. Specify a different file name.”

So I am not able to delete, remove, or replace the existing file.

I have found that ""mfc71.dll is a module belonging to an advertising program by WinSoftware.". There is a removal tool from Symantec which is highly confusing and requires but the instructions are for systems using "Symantec products that support security risks" and I don't use Symantec anymore.

Two years ago I had a bad infection of Popups and you folks helped me fix it. I am sure you can help again.

 

I apoligize for my typo. The file name is "mfc71.dll".

 

FYI: My problem has been solved!

I ran chkdsk and found that MFC71.DLL was removed from my system32 folder.

Then I replaced it with another copy from a friend and no longer get the error message.