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0251 System CMOS checksum bad

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0251 System CMOS checksum bad

PC Gem
Greetings!

I've been working on an older HP Pavilion XE743 with Win98SE and an Asus MEW-AM motherboard with 810E chipset and socket 370 that has Phoenix BIOS.

I keep getting the following error:

0251 System CMOS checksum bad Default configuration used

I have followed the suggested fixes for this by replacing the battery and updating the BIOS to the latest version but I still get the same error. Does this mean that chip is bad or that I am just missing something? The time and date are correct and the computer does not lose those settings. All BIOS settings are correct as well. Any suggestions would be greatly appreciated.

Thanks and Peace!