I thought I'd boot up my old R60 and see if it still works. I set a BIOS password for it that I do not remember, and therefore can't get it to boot from a CD. After a few tries it's now saying it's been tampered with. Thanks past me.
Anyways I guess this is garbage now unless anyone knows if there's some way to bypass this sort of thing :(
@aeva ThinkWiki appears to have a note about this that makes it seem like it's a "open it up and reprogram the chip" scenario
https://www.thinkwiki.org/wiki/Maintenance#Recovering_BIOS_passwords
Although I also saw references on there to the RTC battery being possibly tied to the message, so maybe poke around on there/their forums some more to get a second opinion