Same boat as you. I've got the shop machine turned on, in hopes that there is another battery that will take a charge somewhere.
Exact same messages.
IIRC the last time I ran into start-up issues, I reloaded the saved parameters off the disk, and it fixed things up.
Gotta brush up on my DOS commands again.
Yours been turned off for a while? Ours was powered down over Christmas, about 10 days,more or less.