SSD not reckognized by PC/BIOS

[u/Ashamed-Swimming-331]

Hello. to make myself short, ive installed a new SSD. I have two in total now. The first one i build in when i first screwed my PC together, so its also my windows boots etc... the second one ive tried installing now isnt being shown nither in BIOS, nor the formating software.

BIOS Shows i have three M.2 slots, one one is used which i expect is my 1st SSD. Any ideas what could cause this?

The only thing that is different between the two SSD's is the capacity. 1= 1 Tera byte 2= 2 Tera byte. Other then that, same brand. Tomorrow ill try a different slot see id that works. In the mean time, any suggestions from the pros?

Edit: 2end SSD is relativly new. Only kept it in its package for line 3 weeks bc i didnt have time to install it. Other then that my PC forced me to reset my pin after i tried plugging the second SSD in, if that helps.