Exactly where are your DATA files located? Normally a Sub-directory is created at NV. So the data files would be located at C:NV(name).
Using the Shell you find the NV then Expand and you will see (name) of the Sub-directory where the data is located.
If you have the DATA files in the NV directory than I’d suggest you create the Sub-dir and move the data into that area. You can do it from DOS or Windows Explorer.