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#11
Please forgive my intrusion. I'm not an expert at anything. :)
Just out of curiosity did you run the System File Checker scan suggested by Greg in an earlier post? Any problems detected? If yes, it's been recommended to run the scan 3 times rebooting in between each scan due to system file dependencies.
Since Unlocker didn't work for you I'm not sure if FileAssassin will help, but it's a free utility from a respected company.
Malwarebytes : Remove any locked file with FileASSASSIN
Again, sorry for butting in.