I have a WD Green 800gb HDD (WD8000AARS) and this thing is a pain. I bought an old pc that came with with this hard drive, and i want to install it along side my primary boot drive. (Another HDD) I've tried and it will not let me boot into windows and I am about to use this 120gb laptop hard drive. I'm running Windows 10 and I'm asking if this drive is defective or I need to change something in the BIOS or something. Thanks and Have a good day.