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CMOS BATTERY ERROR

My machine keep give cmos battery error even if I change the cmos battery. How do I get around the problem.

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  • 57 Answers

You said that you already bought a new cmos bat, but still theres a problem.check the cmos battery socket,power on tyour pc and go to cmos setup,optimize default setting and set time and date.

Posted on May 29, 2008

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Why do date and time keep setting to default?


Are you sure you replaced the CMOS battery with a fresh one? Did you install it backwards (the plus side should be UP). I've only seen a bad CMOS battery cause that problem. I would try one you know is new and check the installation.

Good luck.

Dec 27, 2011 | EliteGroup ECS H61H2M2 Intel H61 Sandy...

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How to verify that the CMOS battery needs to replace


<p>The CMOS battery is named after the Complementary Metal Oxide Semiconductor power. The CMOS has the current date and time functions for desktop and laptop computers. It allows the computer to automatically adjust the time, even on computers that are disconnected for long time. When a computer no longer has the date and time and forget it on every boot, the CMOS battery probably needs replacing. Some computers have messages when the battery is weak, while others just lose the current date and time after each shutdown.<br /> <p>Time & Date Errors<span> </span><br /> <p><span> </span><br /> <p>1. Turn on the computer. Look in the task bar at the bottom right. Make sure the date and time is set correctly. Double-click the time and click the up or down arrow to switch to the correct time. Click on the arrow next to month to change the month. Click "OK" when finished.<br /> <p><br /> <p>2. Turn off the computer. Wait 3 to 5 minutes and start the machine.<br /> <p><br /> <p>3. Look on the taskbar to see if time was lost and said a strange date January 1, 2000. Replace the CMOS battery, if this is the case.<br /> <p><br /> <p>CMOS Error Message<br /> <p>1. Look for error messages like "CMOS checksum error", "CMOS Read Error" or "CMOS battery failure" when you start your computer. These errors are caused in the machines shut down for several months or when the CMOS must be replaced.<br /> <p><br /> <p>2. Let the computer on for 24 hours. Restart the computer and find the error.<br /> <p><br /> <p>3. Change the CMOS as the return error.<br />

on Jun 21, 2011 | Computers & Internet

2 Answers

Hello, when I put my pc running it says CMOS checksum error press F1 to enter or Del to enter setup, but I press Del when I save changes "save and exit" the computer restarts, but this time...


The Checksum error basically shows that boot settings which were previously set has been changed or reset. This usually happens when the battery loses its charge and thus fail to retain the CMOS settings. This can also be caused by a power surge or a damaged motherboard. But most of the times it would be the battery problem.

You can try replacing the CMOS battery and enter the values back into CMOS or reset values to default. Then switch off and boot up again.
Hope this works. Good Luck. ~SmokinJoe~

Apr 28, 2011 | EliteGroup KM400-M2 Motherboard

1 Answer

Error is the firmware has detected that a coms battery failure occurred


Hello!
i just want to inform you that CMOS battery failure is not a big deal
you just need to replace CMOS battery from the motherboard
CMOS battery is responsible for date and time management in you PC
also it gives a refrence point in time and space when booting
so if you are a serious programmer you may change it immidiately
and if you are a normal user and you are least bothered with system time and date then
you may keep ignoring this message.

thanks and regards
kindly rate this solution!!

Feb 10, 2011 | Intel D945GCLF Motherboard

1 Answer

''Firmware has detected cmos battery failure''


CMOS battery in the motherboard much measured .3 volt which is a Lithium coin cell battery.check whether the battery gives the correct measurement (recomend to use branded battery like from sony).
if the measurement is correct then reset your BIOS setting by removing all the jumper in the motherboard for about 60 secs.and place it again and start your pc;set yr BIOS to default setting,
let me know if it comes handy to you

Dec 04, 2009 | Intel Computers & Internet

1 Answer

My computer gives cmos error and bios setting are not saved


Please Change the CMOS Battery on your Motherboard. It will work.

Jun 09, 2009 | Intel Computers & Internet

1 Answer

My computer won't boot! It keeps restarting before Windows screen.


Make sure the cmos jumper is plugged in. Turn off your pc, unplug the power source. Remove the cmos battery for 30 seconds then put it back. Reboot your pc. Give us feedback! Hope that helps :-)

Jul 25, 2008 | Abit IC7-G Motherboard

2 Answers

"Critical Battery Error" even with not battery in laptop


Hi,
Do you have another power supply to use?
Also, is it keeping correct time and date?

Dec 14, 2007 | IBM ThinkPad T20 2647 Notebook

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