WD Black 120 ssd + 1 TB Drive

I had installed this drive and it was functioning perfectly. 4 days later I turn on the PC installed new software  rebooted my machine and it went to a black screen saying insert disc with OS.   So I put back in my previous hard drive that had the OS on it. Now I am trying to get this Black drive to work, but the only portion the PC see is the 1TB side not the SSD side. and the WD software wont install as it say it doesnt see or find the hard drive.

Any ideas ?

Welcome to the Community.

Unfortunately it seems the SSD in your WD Black2 has malfunctioned. I’d recommend a device replacement under warranty.