IBM Intellistation Z-Pro Won’t Boot!!

I’m building a workstation from a barbones IBM Intellistaton Z-Pro. I installed dual 2.6Ghz Xeons and 2Gb RAM all tested and working. On startup I get a beep error code of 2-2-3: CMOS power failure and checksum checks failed. It then starts to post and reports the following
error codes:

162: Invalid Configuration Info or CMOS RAM Checksum Failure

184: Bad Power on Password

It then promptly shuts down. I’ve tried everything I can think of. Replaced the battery
Cleared the CMOS by moving the jumper. I can’t flash a new BIOS as it won’t stay on long enough. I’m starting to think perhaps I have a bad mobo?

Any thoughts would be greatly appreciated!!

TIA…..Cristofe Chabot
Stonetree Productions