In a computer, the Cmos battery is one of the most important elements. Although it is very small in size. But It makes sure the correct date and time of the computer. So that is why we can keep track date and time of the computer.
Cmos battery has a very important function in computer settings, managing the hardware drivers. It also keeps the system intact. That is the reason the CMOS battery failure is not a good thing it will lead to computer issues. The question arises here how can we know the CMOS battery is failing?
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Many signs show battery failure. But the most common signs that people face are incorrect time and date. Consistently resent the time and date even after set on the BIOS. Other symptoms of dying are,
- Failure of hardware
- Failure of drivers
- Checksum error
All these symptoms indicate the failure of the CMOS battery. It will tell you that you need to get a new replacement to keep intact the computer shape in top notch. In this blog, I am going to discuss the failure of the CMOS battery and provide you with the necessary information that helps you to understand.
The primary functions and what will happen if it fails and all the symptoms of a failing battery are discussed in this blog. I aim to provide information about the failed CMOS battery. I hope this blog will help you to avoid the problems that the failing or dying battery cause.
CMOS battery and its functions:
CMOS stands for complementary metal oxide semiconductor. It is made up of semiconductor chips that help to store information. This chip is mostly found in computers we all know the term CMOS battery.
The main function of the CMOS battery is to save information like date, time and hardware information, and a set of hardware. That is the reason although it is small it is considered the most important element of computer.
The CMOS battery is important for computer:
The CMOS battery is responsible to supply power to the semiconductor that stores information. If the battery dies CMOS does not have enough power to operate. The battery failure will lead to the computer not being able to recognize the setting and the hardware. It will cause a lot of problems and cause the computer performance hinder. A dead CMOS battery will also cause a problem with a computer having the correct date and time.
The most common symptoms of CMOS battery dying:
CMOS battery failure causes a lot of problems. When the battery dies it affects the computer performance. It will not able to recognize the drivers of its hardware. Fortunately, some signs indicate battery failure. Knowing and understanding these symptoms helps you to replace them before it causes major issues. Signs are listed below,
- Unresponsive peripherals
- Hardware failure
- Incorrect date and time
- Checksum error
- Failure in drivers
- Beep noise from motherboard
- Network issues
- Booting issues
All of these symptoms indicate battery failure. The battery failure tells you that there is a need to replace the CMOS battery to intact the computer runs smoothly.
CMOS battery failure prevents the computer connect to the network. Hardware and network drivers are maintained by BIOS. One thing that will give leverage is that the personal files are not lost if battery failure takes place. In storage, nothing is affected. As soon the battery is replaced you have all of your documents, photos, videos, and files.
Incorrect date and time:
when the battery is dead, the computer is not able to save time and data. It will reset whenever you shut down the computers. Even in the BIOS setting, you set the correct time and date. It will resent the date and time in default.
Whenever you see the date and time are incorrect it is a sign that you need to replace the battery with a new CMOS battery.
This is another symptom that shows the battery is failing. Whenever you encounter a checksum error this is an indication to replace the battery. These errors are mostly caused by wrong CMOS values.
It causes the computer to face difficulty in verifying the CMOS values like time and date, or hardware setting. When CMOS not working PC is not able to verify the values.
Weird hard drive issues:
Another indication that the CMOS battery is about to fail is that the hard drive causes unexpected issues that seem weird. CMOS battery in computer responsible for storing BIOS setting. It also keeps tracking the drivers of hardware.
Once the CMOS battery is not operated, then the computer is not able to recognize the hardware because the drivers are not working properly. Eventually, it will lead to hardware errors that pop out all of sudden.
Booting failures and computer shutdown:
Without any reason, if the computer shut down by itself and reject to start. It may be due to the failure of the CMOS battery. Hardware drivers stop working while the computer operates it will cause a crash.
Already dead CMOS battery creates booting problems because the hardware drivers are not working. In the booting process if hardware drivers did not work means the computer faces a problem from starting up.
How to replace the CMOS battery?
Let’s remove the old CMOS battery with the new one. It is a very simple process. Just need these supplies. You can easily buy a new battery at a very reasonable price. The range is between $1 to $10.
- Compressed air
- ESD mat
- CMOS battery
You can easily buy a new CMOS battery at a very reasonable price. The range is between $1 to $10.
Maybe laptop components are damaged by electrostatic discharge (ESD). Try not to work on a carpeted surface. Always prefer to work on a flat hard surface. It is preferable to work on a conductive foam pad. It will prevent ESD.
Before starting working rub your hand on a metal surface to remove static electricity on your hands. It is better if you have an anti-static wrist band. Before working put this band on from this DIY project.
Unplug your computer from the power source, and shut it down your computer. Including the peripherals and all the cables remove from the computer.
Laptop casing removed:
Some laptops are required to remove large casings. And some laptops have a smaller casing that gives access to smaller parts of the computer. If you are not sure which casing gives access to what parts then try to unscrew all casings and find the right one. Use the screwdriver to remove the laptop casings.
If you do not want the computer to turn on while you are working just remove the battery. Mostly the battery is heavy, long, and in a brick shape.
At this point, you can see a motherboard. Be careful while you are working on the motherboard. The motherboard is a vital part of a computer; you would damage the laptop if you cause damage to the motherboard.
The appearance of the battery is shiny and round. It looks like a coin. It is usually in a small holding packet. Remove the battery just slide it out of the socket like batteries in your mouse.
Placed new battery:
After removing the old one placed the new battery in the same location. Make sure the orientation is the same as the old one.
Rescrew the casing:
All the casings are now Rescrew within the computer. The battery is reinstalled and replace the outer casing.
Plug the laptop into a power source and turn it on. BIOS should move to original settings. Do not worry if the time and date are still incorrect. Just reset the time, and the date and reinstall the drivers.
The battery is responsible for booting up your computer. You can easily tell if your battery is about to die if a laptop has difficulty booting up. If the date and time are incorrect or the hardware drivers are disappeared. Replacing the battery is very simple. Do not get panic.