When do you replace cmos battery

The replacement process has to be carefully followed to avoid any inadvertent problems. Saving the BIOS data prior to the battery change and configuration of the same, after the installation of the new CMOS battery, must also be done properly. If your computer is experiencing problems with the date and time or you see the following error messages:.

Clock not keeping its time on a restart or power cut Bios cmos checksum error defaults loaded Bios cmos battery low cmos wrong memory size No operating system CPU overclocking failed New CPU has been installed. Open the BIOS screen and note all the information on a piece of paper.

Once completed this document will be useful to check out if all the parameters are correctly inserted after replacing the battery. It can sometimes be hidden by extension cards or connectors. On older PCs it may have a cylindrical shape.

The CMOS battery is a small battery fitted on the motherboard of your computer. It has a life of around five years. You need to use the computer regularly to extend the life of the CMOS battery.

The computer power supply increases the availability of a standby current and hence increases the life of the battery. If the computer is not plugged in regularly, the life of the battery is normally 3 years.

However, the life of the battery gets extended to 5 years when you use it regularly. The battery provides power to CMOS memory and the real-time clock. It is a 3V battery. If the voltage drops between certain levels, your computer loses the memory. The CMOS settings like date and time get changed. In some instances, the date and time get set to factory default. If this happens, you need to switch on your computer and leave it on for a day.

If the computer is not showing the errors after rebooting, the CMOS battery is charging. Otherwise, you need to replace the CMOS battery. You can make a visit to the local computer store to buy a CMOS battery for your computer or laptop or netbook. The premium CMOS battery is advised for trouble-free operation of the computer. It will last for more than 5 years. However, you can also buy a cheaper version of the 3V lithium battery for your computer.

But, its life is much less when compared to the premium version. Therefore, it is suggested you buy a premium version of the battery for your computer. Before buying a battery, you are advised to check the rating of your computer CMOS battery and order the same one from an online store.

The online stores usually deliver the items within 5 to 7 days. Replacing a CMOS battery in your laptop or computer is easy. If you are new to the computer or laptop, you can also seek the help of a local computer technician to replace the computer battery. First, switch off the computer or laptop and remove the power cord from the computer. It is also suggested to remove the battery pack from a netbook or laptop.

Now your computer or laptop is ready for regular use! Again, it is suggested to use the computer regularly to extend its battery life. Click To Tweet. Have you changed your CMOS battery in your computer? Let us know how it went! Wanda Greaves is the co-founder of BatteryChargersExpert. More Posts.

Your website needs to be aesthetically pleasing and functional. We build websites for desktop and mobile that are both. Your website needs to attract search engines and consumers. We are experts in local search and SEO, and can make that happen. Anybody can write words on a page, but can they write content that integrates SEO best practices and converts? Could be almost anything, though it sounds like some kind of hardware problem. I would have a technician look at. I have a Dell desktop core i7 and when I came back from a weeks vacation it would not start up.

After reseating the memory and trying various thinks I replaced the CR battery and it came back to life. Then it would not start again. I pressed the button a nothing happens. Went and got another battery and replaced the previously new battery and the PC is now working as normal again.

I have three different OEM motherboards for desktop computers. Hi, yesterday I was trying to used my desktop but everytime I hit on, it runs, but nothing on display. I switch on and wait but still nothing happens. Unlikely to be the CMOS. Please my acer aspire keeps longer time before it begins to boot and sometimes I have to power it on and off for several times before it begins to boot it also has a beep sound during booting please help me out thanks. Hello Leo , i see this thread has been going for a few years…it may outlast many cmos batteries!!

I have checked all the keyboard settings. I have uninstalled and reinstalled my drivers. I even installed a totally new driver with the same results. I Tried the on screen keyboard , and it acted the same as the regular keyboad,only shortcuts.

I attached a usb keyboard and it also acted the same way. A system restore had no effect as well. I have run spybot, housecall, malewarebytes,avast..

It occasionally works fine ,then will switch back to only shortcuts n opens a new window ,s opens a save as window etc.

My last step, thanks to this thread will be to switch out to a new battery. Any other suggestions would be appreciated. I have an issue after my battery went dead on my desktop hp.

I replaced the battery as the pc wouldnt boot into windows and it suggested battery was dead. After replacing the battery I am asked to press f1 to save new setting but now the usb keyboard no longer works. The number lock button is lit up on the keyboard but no buttons do anything therefore I am stuck. I tried the keyboard on another computer and it works fine. I have tried all the usb ports and I just cant get the keyboard working. Any ideas? If a laptop is left off for lets say two years and the cmos battery goes dead therefore forgetting time and date will internet explorer loose all its settings like delete history after 20 days?

Lets say you knock the laptop back on after two years if the clock is wrong surely that means internet explorer would still have browsing history from two years previous as it cant relate to the clock to keep track of time, i,e delete history after 20 days? All I can suggest is run an experiment. I have leveno y55o laptop facing problem. Please advise me. I have an HP Pavilion only 2 year old it would not boot up, try everything no joy, so change the cmos battery working perfect now so my opinion must do something.

Most of those settings are kept in a type of dedicated flash memory, not unlike the kind that might be inside a USB flash drive. I wonder why my 2 Asus rog board lost bios settings when I swapped their batteries? I replaced my PC battery afterwards, everything worked fine like the time and skype connection, however I cannot access my web browser because a screen pops up saying that the time and date are not correct. All of a sudden it stopped working no sign of life.

Plugging charger in. I left it like this and it started working agin after a few days. Have faced this issue 2 -3 times recently. It seems when the computer shuts down it just dies off untill a few days. This feels like a faulty battery, but I could be wrong. You may need to take it to a technician for diagnosis.

If she turns off the PC at the back, then it usually does start by afternoon or evening! Windows There are other folks that are having SSD start up problems but they may not be connected. I thought perhaps this sort of wait till evening and it starts up, type behaviour might be because the CMOS battery is warming up during the day and and as a result putting out enough current to allow the PC to access the bios to find where the boot drive is.

I will try replacing the C battery. I got a C from a dollar store two for a dollar and replaced the CMOS battery but that did not work. The computer is still dark. No bleeps. Just the fans running. Perhaps it is a question of waiting for a capacitor to discharge for some reason. Perhaps it will never work again, but till now it has been a question of waiting for a while.

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