Every time you start your box, it keeps asking you to reset the time and date?
Is it refusing to boot the Operating System?
Even I, too, have dealt with this problem with my PC.
So, dont waste your time.
Jump to the start, read till the end to understand and solve your problem.
It might help you to quest your thirst for knowledge.
So, why does CMOS battery fail?
It is connected to a circuit, the charge moves through the circuit, and a chemical reaction occurs.
This rection lessens over time, and your CMOS battery dies finally.
So, its not a big deal.
Being a battery, it can die over time.
Also, there may be some external issues on the motherboard.
What is a CMOS Battery?
CMOS stands for Complementary Metal-Oxide Semiconductor.
But before going to the CMOS battery further, first, we should discuss BIOS.
It stands for Basic Input Output System.
BIOS is the first thing that loads up when you start your rig.
It is the connector between the OS and hardware.
Its different than an operating system as it instructs your gear on how to boot up the operating system.
Suppose you are opening a software up.
First, your CPU sends precise instructions to your hard disk to find the software from the storage.
Once it finds the program data, it sends data back to your CPU.
Then your GPU leads your monitor, telling it how to arrange the pixels on the screen.
Everything starts from thereincarnationof the BIOS every time you start your PC.
But how can BIOS keep the information intact?
Where are these changes to be stored?
BIOS needs to remain operational after you shut down your PC.
But when you turn off your setup, tweaks in the BIOS can be changed.
So, thats where the CMOS comes in.
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CMOS battery provides enough current to keep BIOS contents intact in RAM during power off.
I have a CMOS battery in one of my PCs that has been working for like 9 years.
Generally, a CMOS battery can work for2to10years.
Can a computer run without a CMOS battery?
A computer can run without a CMOS battery.
Thus, the CMOS will reset and lose all custom prefs.
After this, you oughta reset the clock every time you start your PC.
Take a look at a few signs of a CMOS battery failure.
So, it is losing the power; it loses the ability.
So, every time you start your PC, you see that your computers time and date are incorrect.
So, your motherboards CMOS battery may be about to die or already dead.
So, the computer wont have the values to verify anymore.
This results in errors while booting the equipment.
Note: Worst-case scenario is your rig wouldnt boot up at all.
You might have questions like,
Can a dead CMOS battery stop a computer from booting?
A dead CMOS battery can and cant stop a computer from bootingit depends on the motherboard.
Some motherboards can boot with a dead battery, while some need a CMOS battery to boot.
The battery controls data and maintains the time and date during boot up.
The hardware drivers stop working while your system boots up as the battery is dead.
If you dont take action with your CMOS battery, youll notice the unwanted shutdown from time to time.
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BIOS is tasked with maintaining hardwire and connection drivers.
Check the PCs time and date.
If its not correct, make it accurate.
If you hear a constant beeping suddenly working with your PC, it might be for a hardware issue.
Other problems like continuous date and time changes will ensure your CMOS batterys death.
For this, you may not be able to print out any documents or anything.
You may consider installing the printer driver correctly.
Yet your PC may keep showingCant find printer.
It is considered to work on a conductive foam pad to prevent ESD (Electrostatic Discharge).
But a hard and flat surface will do the job.
Also, take some bowls to collect the screws of different shapes and sizes.
To remove and replace the CMOS battery, you have to:
Can you see the motherboard yet?
If not, unscrew some more screws, explore some times, and youll definitely find your motherboard.
It depends on the brands and models on where the motherboard lies.
If the case is different, you know what to do.
Note: If your CPU casing is metal, dont get cut by the edges.
Have some time to spare?
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Can I fix my CMOS battery failure?
There is no way of fixing your CMOS battery at all.
Yes, you are reading the fact.
Itll cost only a few bucks.
And the process of doing it is not that tiresome.
So, what happens when the CMOS battery is removed?
When the CMOS battery is removed, your BIOS controls will be cleared.
So, removing the battery results in removing the power source, and itll clear your BIOS tweaks.
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Whichever the case, dont worry too much.
I hope this article cleared a lot of your confusion regarding the CMOS battery.
If you have further questions about CMOS battery and stuff, comment below.
