Let's see if we can identify what is controlling the file first. Download Process Explorer from here
and save it somewhere handy. Right click the zipped file and Extract All...
- when the unzipped folder appears double click procexp.exe
to run the application.
Press CTRL + F
to open a search window and enter the file name in the appropriate box and click Search
All being well the file should appear in the pane below and you should see the name of the Process
that is in charge of the file.
Repeat for the other file and let me know what you find out.*
If you navigate to the files in question, right click and select Properties
you can copy the file name and then paste it into the search box to save typing time.