I actually just read someone else is possibly having this issue but with their NVME drive. Everything was working great last night, i shutdown my PC booted it back up this morning to discover that my SSD wasn't being detected. I had this issue a while back but turned out I had budged the SATA power cable a bit and it wasn't fully plugged into the SSD, not this time though. I switched the SATA power cable and nothing, I switched the SATA data cable and nothing, I switched it to a different SATA port on my mobo and nothing. Finally I took the SSD out and put it in an external enclosure and it's kind of being detected. But when i go to My PC it just shows as USB Drive G and is greyed out. When i go to Disk Manager it shows the drive as having no media. Just maybe 3 or 4 weeks ago i had checked the health of all my drives with Crystal Disc Info and everything was in good health. This SSD is maybe a year and a half old. I'll link a Speccy report below. As stated in the title it's a 1TB T-Force Vulcan Z drive.
http://speccy.piriform.com/results/yZ750n5wbjzOHneCJuN8Lc5
http://speccy.piriform.com/results/yZ750n5wbjzOHneCJuN8Lc5