So I wiped a hard drive over night, and when I woke up this morning I'm seeing this screen, Reboot and Select proper boot device or insert boot media in selected boot device.
The hard drive was not my main one, it was just sitting in there so I thought I'd wipe it. Windows is on another one, but it won't let me boot to it. All was fine and plucky before I wiped this seemingly innocent drive. Any ideas?