I have a 1TB wd blue hhd that I picked up for $20 and I plugged it in to my pc, but it wont show up. It shows up in the bios as a bootable device, but doesn't show up in files or disk manager. I've tried changing sata data and power cable, but nothing. I also have Toshiba 120GB ssd as a boot drive that doesn't show up in the bios as a bootable device. I've tried moving the sata data cables around on the board and nothing changes. I seen on YouTube to try and do a system memory diagnoses, but that didn't work either.