Question Either SSD or HDD not showing in BIOS

[hqppys]

Using a TCSUNBOW 240GB SSD and a Seagate 1TB HDD. Both drives when connected to PSU and motherboard are visible in Windows, but ONLY my HDD is recognised in BIOS, there is not a boot option for my SSD. My SSD is recognised in BIOS when my HDD not connected to the PSU or motherboard. Completely clueless right now. Merry X-Mas to everyone.

 

[hqppys]

Important update, in my BIOS it has a "Hard Drive BBS Priorities" folder with BOTH drives. Whichever drive is of higher priority in the "Hard Drive BBS Priorities" folder is the only drive shown in the normal Boot Priority.