At this point, try accessing the BIOS by pressing F2 and once your there press F9 on your keyboard to set the BIOS to the default settings and then press F10 to save the changes.
After doing that, see if the system recognizes the SSD if not try the following:
Try a BIOS recovery to the latest BIOS version that you already have, you can download it at:
You can follow the steps to do a BIOS recovery at:
If that does not solve your problem please try the SSD in another system if it is possible to see if the SSD can be recognized in another system.
I look to hear from you.