HELP!!!!! Upgrading HDD on Mini (1000) 1151NR?????

I've been trying to upgrade the hard drive in my 1151NR, but have so far been unsuccessful.



I can hear the replacement drives turn on, but they aren't recognized by the BIOS.



Could this be a BIOS or cable problem?



Anyone done this successfully? (ImportJunky, are you reading this?)



Thanks in Advance...