So I have a friend who is trying to help his Dad with his PC. The PC POSTs and tries to boot, but returns a "no bootable device" error. Further digging shows that the system doesn't recognize that it has an OS installed, giving a "total identified Windows installations 0" error in the CLI. Additionally, the system also doesn't seem to be able to recognize drive C at all, even though the physical HDD itself appears in the BIOS. I'm currently working on a fix, and I was wondering if anyone had any advice for me?