konazxiii

I'm glad you got it sorted out.

In my limited experience this is probably due to the drive loosing its partition(s) or partition table. I have limited success (but some still) by reformatting the partition back to its original format (usually NTFS for modern versions of Windows) and then running Recuva on it. DM me if you would like to be pointed to some free, legal, non-maleware options readily found on the internet.

There's really only so much you can do. Try it in different PCs. Even try different older/newer versions of Windows. Try a different OS (Linux). Linux is free and you don't have to install it to run it. It can run via VM or on a live USB. Linux also has gparted partitioning software that might help but it's limited in its rescuing abilities. Have you tried diskpart.exe via Powershell/Command Prompt? Lastly consider that it may be physically damaged and in this case it's big bucks to mail it off to a recovery service with no guarantees so it may just be dead. I have a 32GB SDXC that I have tried everything mentioned here, other than sending it off with no success. It has bad sectors that almost nothing reads. The one program that did read it couldn't do anything with the bad sectors in the middle. I tried cloning an image so I could have that to recover from and that failed too. It's. Just. Dead. Recuva is a solid product though. I used it to scrape deleted files from a 10 year old 2GB Sony Micro m2 card that came out of my Sony-Ericsson W810 ten years prior. Worth every penny.

I have had this issue as well. Just a hunch as I'm not pro but I have attributed the issue in my case to file compression....zip files. I've noticed that some of the videos I had stored on a backup drive were kept in zip files. It's as if Recuva thinks its recovering mp4s when it's actually picking up the zipped version of the file. I finally gave up and deleted the corrupted recovers because I wasn't comfortable shelling out money for video specific repair software to find them utterly useless. Fragmentation can play a part in hampering the recovery process.