I purchased a new Western Digital 2.5" 500gig advanced format hard drive, model WD5000BPKT for my empty second hard drive bay in my Aspire 8930 notebook. The hard drive is formatted and works properly in a sata external case using usb and plugged into the notebook. All seems correct and good till I remove the hard drive from the external case and install it in the second open bay in my Aspire notebook. My notebook doesn't see it at all. Not even in Bios. Is there any answers out there that can help with this issue? Thank you.