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Bad Battery

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7 replies

by arichart

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At bootup (if the power cord has been disconnectd), I keep getting a bad bios battery warning and I have to keep going into the setup to change from the defaults. I put a new battery in but it still keeps coming up. It boots fine it I restart, but like I mentioned, whenever I pull the power cord and then startup, that's when it happens. Any ideas?

7 replies

by sgt_shultz

this has always been the battery in my experience. are you sure you have it in there correctly? can you try another battery? examine motherboard carefully in that area. any damage? if the battery is definitely good maybe something happened to the cmos backup related motherboard circuitry...sorry can't be more help

by shiny_topadm

Hi, there are a few things to check:
1) the new battery could be bad, check with a voltmeter or by replacing again.
2) the battery isn't making a good connection in the holder or isn't inserted correctly for polarity (+ / -). Some battery holders will physically accept either orientation, but only one is correct electrically!
3) some bios value is wrong. Does the system keep the date and time? Does it "save & exit" (what you need) or just exit?

hope this helps...

by arichart

Batteries are good, polarity is correct, and the bios lets me save, but defaults when the power cord is pulled. Almost makes the bios seem like RAM instead of ROM.

by brddog

Two things that come to mind:
1) Finger prints on battery, too much body oil will cause poor contact.

2) Bios "clear" jumper is installed.(Primary choice of problem)

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