Thanks for the reply!
The error it gives me is: "The filename, directory name, or volume label syntax is incorrect.".
Some back story:
I had issues installing my AV (NOD32), and they recommended doing a system scan (the guy remoted into my PC at the time and performed it). It discovered a "potentially unwanted application" inside a 80GB .zip backup of my partners laptop (which includes pictures of the kids between 0-2 years)
It seems like it did a "secure overwrite" as I was unable to use other software to recover it. (which could also explain why the "Header" tab is all zero'd out).
So I know the contents of the file, the original file name etc. and it's there with no overwritten clusters, I just can't recover it