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[386] Checksum error at post

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First post, by 386SX

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Hi,

I've changed the battery of my Soyo SY-019I Eteq based motherboard and it's ok, battery is operational and everything but sometimes when I left it too much without powering up it shows at post the "Checksum error press F1" error loosing all the previous bios config. Does it mean that something is wrong with the battery? I used the usual three-cell Ni-Mh 3.6 80Mah battery you can find in eletronic stores and soldered wires on the mobo.
Before it gave me the battery error cause obviously it was gone. It happens sometimes without a certain reason. The only logic is the time I left it without power.

Thank.

Reply 1 of 5, by Scali

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Yes. The BIOS calculates a checksum value for the current configuration in the CMOS. If it sees a mismatch, the data is corrupt. Which means the battery hasn't done its job of powering the CMOS when the system was turned off.

http://scalibq.wordpress.com/just-keeping-it- … ro-programming/

Reply 2 of 5, by 386SX

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Scali wrote:

Yes. The BIOS calculates a checksum value for the current configuration in the CMOS. If it sees a mismatch, the data is corrupt. Which means the battery hasn't done its job of powering the CMOS when the system was turned off.

But the battery I use it's new. And the second I tried so what could it be? Bad soldering? Usually it works if I switch it off and on even after hours but if I left it too much often it gave me this error.

Reply 3 of 5, by Scali

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It could be that the battery itself is good, but the traces on the motherboard are not (they could have been corroded by an earlier leaking battery.

http://scalibq.wordpress.com/just-keeping-it- … ro-programming/

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