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Posted on Jan 26, 2012
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Cmos battery error failure

When I turned on my computer, there is a notification came on screen that "CMOS Battery Failure", due to this error I observed that my computer do not show the actual time & date, it shows 12:00 AM, 01-Jan-2005 which is I think default time & date assigned in my computer.. please guide me accordingly

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  • Intel Master 32,281 Answers
  • Posted on Jan 26, 2012
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The CMOS (BIOS) battery keeps the computer'a comfiguration and the Date & Time settings in the CMOS (BIOS) chip in its memory. When the CMOS (BIOS) battery is flat these configuration information is lost.
Replace the CMOS battery with a new one, in most cases this battery is a lithium 3 volt battery type CR2032 and it is coin size battery 18mm in dia.(check it to make sure the type of battery is installed on your motherboard).
When you replace this battery then go into the BIOS and set the Date & Time etc.

5 Related Answers

Anonymous

  • 23 Answers
  • Posted on May 24, 2009

SOURCE: firmware has detected cmos battery failure even after changing the battery

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 mobo...it 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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Anonymous

  • 34 Answers
  • Posted on Jan 22, 2009

SOURCE: I HAVE CMOS BATTERY FAILURE

You can find a replacement battery at any local retailer that sells battery watches. If there's a walmart in your area you can go there. Just take the dead battery with you so you can get the correct replacement.

Anonymous

  • 272 Answers
  • Posted on May 24, 2009

SOURCE: cmos battery failure even after changing the battery

may be the replaced battery is not working too. please try another battery or first make sure, the battery you placed is working ok.

Anonymous

  • 1901 Answers
  • Posted on Oct 05, 2009

SOURCE: cmos checksome error

Looks like your CMOS battery may be getting weak. Note the number and voltage on the battery on your motherboard, usually about the size of a quarter, and replace it. When you first boot up after replacement you need to go into the BIOS because the CMOS settings need to be set/verified and do a Save & Exit.

Note: Before replacing the battery, turn power OFF, unplug the power cord, and press and hold the power button for 5 seconds to "bleed" any capacitors.

Thanks for using Fixya.

clokker

markus

  • 253 Answers
  • Posted on Aug 10, 2010

SOURCE: my computer(P4 1.7Ghz,Intel 945wn MB,

update the bios.Find out the motherboard number.
than go there http://downloadcenter.intel.com/Default.aspx
find the bios and install it.Take care with that.Do not shut down under
the install process...

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http://www.computerhope.com/issues/ch000239.htm
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