If it's there try RECUVA. If not, put it in some USB case and try again.
Drives can just fail. I'm sure you've been told about backups.
I have a SSD I only use for ISO files, temp pictures etc.
It just went away where my computer can't find it.
Have looked in devise manager. Disk management and computer and it's not there.
The SATA 3 cable is plugged in tight on the drive and motherboard, power it plugged in.
It is a Samsung 120gig SSD.
is there something I am missing on trying to find it?
The drive is 2 years old and have never had any problems with it before.