Can't find harddisk

G'day ...

 

I have a bunch of 410MTs that were disconnected and stored away quite some time ago.  I pulled them out recently to evaluate their suitability for a project, and found that none of them were able to successfully boot -- all complained about not being able to find a harddisk, and neither the CD nor the Zip were seen, either, although the floppy was.

 

I'm guessing that something in the NVRAM got nailed when the little CR2023 battery died.  Anybody seen this kind of thing before?  Any suggestions for how to bring these beasts back to life?  The BIOS is A02, for whatever that's worth.

 

Thanks in advance,

doug