When I was making my PC recently, I had two different drives showing up in BIOS. An SSD and HDD (2.5".) Since I wanted to put windows on the SSD I unplugged the HDD and continued through setup with only the SSD plugged in. After a while I plugged the HDD back in and it no longer shows in BIOS or Windows, even though I can feel it vibrate. I tried different SATA ports in the motherboard and different SATA cables but it still won't show, can anyone help me figure out what happened? (I haven't tried putting it in another computer because I don't have another.)