You probably accidentally deleted some important files more then once. It is especially sensitive when it comes to photos from your family trip and when you deleting by instinct with SHIFT+Delete (avoiding Recycle Bin). I did that today and I needed some simple data recovery software. I remembered that there is File Scavenger who can restore accidentally deleted files and I installed it. Scanned the drive, found my photos and when I wanted to recover them I found out that I need to buy the licence for 55$. I didn’t like that so I decided to find free solution and found Recuva, free alternative for the same job. You don’t need commercial version and free version is just fine. It does the job perfectly!