In addition, you can switch to another SSD port and see if it can be detected by BIOS. So you should check your SSD hardware and the corresponding ports, and make sure they are working properly. The hardware faulty can prevent your SSD from being detected by BIOS. You don’t have to try them all just work your way down the list until everything’s working again. Either case, you can fix it if your BIOS doesn’t recognize your SSD.
The reasons why your SSD is not detected by BIOS are your SATA driver issue or your BIOS setting problems. There are workarounds to fix BIOS not detecting SSD issue in your Windows computer. If you can’t see your SSD while on the BIOS setup screen, don’t worry.