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Elite K7SEM Cmos battery replacement problem

I've used this mobo for over 5 yrs, when bios alarmed that the battery was low, i replaced it with new one ( SONY Lithium 2032 3v). When i turn on the comp the problem still the same cmos batt low, so i need to setup my bios everytime i use my comp. is it wrong to replace the battery just like that or should i move any jumper?

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Try to verify the real battery voltage and polarity (use multimeter) or cleaning the socket contacts.

Posted on Jul 09, 2008


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I have a Soya SY-7VCA mobo that hasn't been used for about 6 years. Upon bootup, I received a CMOS checksum error message, but was still able to load a copy of Windows 98SE that I had on floppy. After...

Probably your BIOS battery, replace that and setup you BIOS again and it should be fine. BIOS batteries look like little round watch batteries.

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1 Answer

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If not graphics card problem, you are looking at a motherboard error. Try removing the bios battery for 5 mins, replacing and resetting the cmos settings to default, if that works, I'd consider thinking about a new mobo sooner or later.

If this does not work, motherboard possibly failing

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My ECS P4M800Pro-M board will not hold bios after shut-down.

Good day sir/ma'am, we have several old motherboard that acts like that and everytime we turn oon the PC, CMOS/BIOS previous settings were not saved. even new batteries did not solve the problem, We suspect its the CMOS/Bios chip itself is the culprit. We did replace the whole mobo with new ones and scrap the old ones.
My answer to your Q is maybe, until we try to update it. but the best is to replace the bios chip.

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If you are also experiencing a problem saving the date and time in the BIOS, then you probably need to replace the CMOS battery. Also, chech to see if the CLEAR CMOS jumper on the mobo is set in the correct position.

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This is a tough one. On some system bioses one beep means a problem with the RAM. On most it means a succesful POST. Are you getting any video? Have you tried booting to a boot disk? Have you tried a new hard drive? Have you tried to clear the CMOS? Good Luck!

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If you have basic knowledge with electronics or that you know the basic shapes of electronic parts, look for a busted electrolytic capacitor on your may look bloated or discolored. It can be found near the coin battery. Ask for an expert electronic technician to replace it. If it is still under warranty, have your mobo replaced with a new one.
If your mobo has its circuitry doing fine, you will need to update your BIOS software. Have someone assist you on this especially those who are computer engineers.

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Try to reset your Bios by remove the CMOS battery
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