Hi, the issue began about a year ago, so I don't remember everything 100% but I had this HD connected and put the PC to sleep. When I opened it up again (I don't remember if the system resumed or had crashed in the mean time) I had lost acces to the HD (couldn't read and didn't open when I wanted). I thought it was broken and restored files to another HD with one software and then with another one when I saw it found more files. But I knew some specific files were still missing. Then I scanned the HD for bad sectors but the scan found none. Then I found a tutorial that showed how to get access back to the HD which worked and I could access it again but the specific files are still missing. The files that I'm referring to are videos from my grandfathers 80th birthday that I put a lot effort into filming and that I later re-encoded to save some space and put into this HD.
Any ideas what happened with the HD and what to do next with it?