I have a HP ProBook 6460b laying around. I FRESHLY installed Ubuntu 22.04.3 Desktop, and then at the reboot stage, reboots completely fine, and it gave me this error:
BootDevice Not FoundPlease install an operating system on your hard disk.Hard Disk - (3F0)That literally makes me want to throw it out of the window.
(Written to USB with balenaEtcher)