The BIOS does not see SSD

Good day, guys.
Really need help. Introduction. Windows 10. Update Manager said that there is a new update. Agreed. It downloaded and began installation. I continued to work on the computer. Then, I turned on the window update to see how they're doing. Was 16% the installation. And then suddenly everything is frozen: the mouse did not move, the body light red not burned.. any attempt to bring up task Manager or anything, were not successful. I thought "you never know, wait." So stood the two hours and nothing has changed. I decided to act tough - just rebooted. And of course did not start: black screen and little bottom vertical slash came off the boot disk. I go into the BIOS - there is only 3/4 HDD (simple file trash). And fourth, just the SSD system is gone.
I started to climb on all sorts of forums, trying to understand what the fuck happened.
Did a bootable USB stick with trying to remove the update, restore the old working version of Windows.. but nothing happens because of this system the SSD does not see the computer.
Disconnected from the motherboard the HDD the file , leaving only the SSD. The SSD was connected to all SATA ports on the motherboard.
Even found some stuff in the BIOS to have the IDE option, and ASHC or something...
In short, I don't know what to do. Command prompt is also not working from the boot drive. I tried all the ways found on the Internet.
So I write here. PEOPLE! Help pliz.