Why bios stopped seeing the only and main ssd?

Question

Solid State Drives

The story is this - I turn on the computer, enter the password all the rules and then bam reboot - the bios turns on and says that my ssd is mute, I tried to do something with it 20 times rebooted and always SATA PORT is missing . I took out the battery from the BIOS and turned off the power for the night, in the morning I turn it on and the boot screen says that something has changed, they say, set it up yourself or load the default settings, I selected the first item, go to the BIOS and voila ( SATA PORT - Kingston ... Windows. .. ), I happily leave the default settings and boot up - again there is no disk and no dancing helps.
The contacts are clean, the bp is also in order, it all started with a crash after a normal PC boot.
I would have already taken the ssd to a service center, but why did I see the BIOS disk after a night of inactivity, but then went blind again?
The MSI B350M board with the latest firmware (it came out about a year ago, then I updated it), the disk also worked like a clock, I checked it for a long time, but there were no prerequisites for this.

Answer 1

The SSD is dying. Bang! And he is no more...

Answer 2

If there was then no, then there is again ... with a 99% probability - the death of the controller, either on the motherboard or inside the disk.
It is checked, the methods to choose from:
* plug the disk into another sata connector, if any, if the disk is m2. then a bummer, there is only one connector on the board
* insert another known working disk into the motherboard
* insert your disk into a known working motherboard
this will allow you to understand whether the motherboard is buggy or not
ps the cost of diagnostics in repair shops is about 200r (some do it for free), plus the cost delivery computer