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I have put new CMOS but it is still not showing the correct time and date

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My advise is that you need to change the battery of your motherboard. The coin-type battery. I hope it will solve your problem.

Posted on Mar 04, 2009

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ASUS ALL IN ONE computer ET2221i-b85 The time is not correct and keeps losing time. I want to replace the cmos battery .


Keeping time has always been a problem for computers, as their internal clocks needed something to synchronize with. If you have an Internet connection and use Windows, you can get the time adjusted regularly using a time set function from Windows online. The CMOS battery will have little to do with time settings, unless it goes bad. Then, not only will your date and time go out of sync, so can many other settings in the CMOS. So, unless you are getting a low battery warning, or both the date and time are out of sync, you probably don't need a new CMOS battery and replacement probably won't fix you time drift issue.

In Windows 10, to get auto time sync, go to "Settings", then select "Date and Time". Under this you will see an option to "Set Time Automatically", as well as to select your time zone.

Aug 19, 2016 | ASUS Motherboards

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What is mean CMOS battery use for in computer motherboard ?


CMOS stands for Complementary Metal-Oxide Semiconductor. It is basically a chip in the mother board that stores information such as your system hardware settings and date and time. It is powered by a battery the size of a small coin. Without the CMOS battery, your computer will revert to original manufacture hard ware settings every time you turn on your computer. If you keep having to set the correct date and time of your computer every time you turn it on, then it's time to replace the CMOS battery. I hope that helps.

Nov 27, 2014 | Motherboards

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Cmos battery error failure


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.

Jan 26, 2012 | Intel DG31PR Motherboard

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After booting my pc i find my computer with message and to press f2 key and as desktop opens it shows wrong date and time pls help as well as speed is low and its has 3 gb ram support


you will have to change the bios/cmos battery of your pc. before you can have a correct date and time and this will also enhance the speed of the pc

Feb 16, 2011 | Motherboards

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Every time i turn my laptop on the time and date keep changing and going back nearly 3 years,i have been told it is the CMOS battery is this right?


Hi,

What you have been told is correct. When the real time clock battery (CMOS) runs out then the date and time will revert back to the day the bios was programed, in your case 3 years ago.

You can set the date and time while you are using Windows but each time you power the laptop down it will loose this information.

A quick workaround is not to power the laptop off but put it to sleep instead until you have got a CMOS battery for the laptop.



Regards.

Aug 15, 2010 | Motherboards

2 Answers

How to know if the battery of the motherboard is empty


use multitester to check the battery of the cmos..
set the multitester to DCV 10..
and watch out for the pollarity of the battery..

Mar 18, 2010 | EliteGroup ECS GF6100-M754 Motherboard -...

3 Answers

I INSTALLED A NEW CMOS BATTERY BUT STILL NO EFFECT AFTER THE SHUTDOWN WHEN I RESTART IT THERE IS AN ERROR ..LIKE THIS CMOS SETTINGS WRONG ...CMOS SYSTEM TIME/DATE NO T SET...PRESS F1 TO RUN SETUP...PRESS...


Just replacing the battery will not set anything. You have to do the setting of the values. If you can run setup by pressing F1, then do that and set all the settings and then save before exiting. Make sure you save the settings by choosing the correct exit and re-boot option.
If the settings cannot be set nor saved, then make sure the poser is off or pull the plug from the wall outlet, then short the bios with the jumper to short the bios. This will reset the bios to the default settings. Turn on the system and then go to the bios settings and set the settings. Then use the reboot option to save the settings.

Nov 06, 2009 | ASUS P5PE-VM Motherboard

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Bios


Hi, if you're system does not keep the correct date & time it is possible the cmos/bios battery on the motherboard has reached it's max life span. The bios battery recharges only when the system is on. In many cases even when the system is on & you correct the date & time & notice the time is off the battery needs replaced.
92208a8.jpg How to replace cmos battery:
http://www.computerhope.com/issues/ch000239.htm

Good luck!

Mike

Aug 01, 2008 | Intel Motherboard

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