copy&paste because lazy:
I have two SSDs in my PC. Primary (Samsung 850 EVO) for OS, programs and games I play often. The second (Crucial MX500), the one which I'm pretty sure is dead, is for other games, random files and family media. Specifically that last category was ~130GB, mainly photos.
On Thursday night (so two days ago), I was transferring files (videos) from my primary SSD to my second SSD. About 2/3 of the way through transferal, it stopped doing anything. I clicked "cancel" to try stop it, but nothing happened. No error message or popup. I sign out to quit the processes, sign back in, and attempt to delete the files (since they were corrupted somehow, I couldn't play the videos), but wasn't able to and got an error message. Unfortunately I didn't think anything of that message, just another random Windows error right? Well it was the first time I'd seen it, so in hindsight I should have investigated more. I don't recall if I tried to transfer/use files from this SSD earlier that day, since I usually transfer files to it near the end of the day/when I'm going to turn my PC off.
I shutdown my PC and went to sleep. Next morning, I try to turn my PC on. It fails to boot. I force it to turn off, and try again. Still does nothing. Unplug all peripherals and try again, it boots successfully. First thing I check are those files on my secondary SSD (again, the dead one, Crucial MX500)... only it's not there. Only my primary SSD is showing. Huh? Guessed it was a bug, so I restart again... Nope, still not showing.
Turn my PC off and go into BIOS, it's also not showing there (it was, just under a different name, for some reason?). Again I turn off my PC, open it up, check for loose cables (since I had to move my PC around to remove the peripherals), and try again. Still not showing up/working. So I switch out the cables, maybe they're somehow dead. No change.
For now I've removed the SSD, and as said earlier it was in fact showing in BIOS under a different name, but of course it's not there now since it's removed. I don't know if that means it's still alive or not.
And that's where I'm at now. The SSD in question is still within warranty, which I guess is cool, if it is dead, but that's not the issue. It would be pretty heartbreaking to lose my family media, along with everything else stored on there. I had a backup external HDD, but hilariously that also died about a month ago, and I stupidly never got around to replacing it.
So is the SSD dead? If yes, is it possible to recover the files that were stored on there? Would be a huge bummer if that's not possible.