The \?\C:\ notation just tells the Windows file system to bypass some string parsing.
If you are seeing a "file location", then that sounds like you are not looking at the file itself, but a shortcut to an image file. Don't open the link, navigate to the image itself and open it. Or just remove the "\?\" part.
There should be no problem using "\?\" to reference a file, so I suspect that you have something else going on. You don't say what error messages you get, so if you still have a problem I would recommend that you share a screen image of what you are doing.