I shut down my PC and then unplugged my hard drive to plug in another to check some old files, the pc didn't recognise the hard drive (not in disk management either) so i gave up and plugged my old one in, now that one isnt recognised either. Neither of them show up in BIOS so i'm kinda stuck. Everything on the internet suggests that if it doesnt shop up in bios it's toast, what are the chances that both hard drives are dead? Any help on this would be much appreciated.