@bburdette
After the hard reset, you have to try and start it the normal way, ~1s press
Just if you didn't understand
gdisk has a v = verify command
in the recovery menu = r you could try g = convert to MBR only OR f = rebuild GPT from MBR
(only if MBR and GPT match partition count numbers, o MBR and p GPT in recovery menu)
or there may be other problems that verify will tell you about, maybe the backup is not at end of disk
After the hard reset, you have to try and start it the normal way, ~1s press
Just if you didn't understand
gdisk has a v = verify command
in the recovery menu = r you could try g = convert to MBR only OR f = rebuild GPT from MBR
(only if MBR and GPT match partition count numbers, o MBR and p GPT in recovery menu)
or there may be other problems that verify will tell you about, maybe the backup is not at end of disk