Bios errors on T41 - 0187 EAIA and 0191 system security

[Glaurung-quena]

I bought a T41 with broken hinges, figuring I could replace the hinges from my parts stash. That was annoying but I managed it. Then I realized it was not clearing two bios errors even after replacing the very dead cmos battery and resetting the time.

As best I can tell, there is no BIOS password set, but I still get these errors on every restart -

0187 EAIA Data access error
0191 System Security - Invalid remote change requested.

It looks like the motherboard was replaced at one point - the serial number fields are blank (both for system unit and for system board) and the UUID field is all X's.

I tried using the reset serial number utility, it spat back an error that the thing I was trying to change is locked.

Can the motherboard be saved, or do I break this laptop up for parts?