What happens if the CMOS battery fails?
How do you fix a CMOS battery failure?
In this post,MiniToolshows you some CMOS battery failure symptoms and what to do when the issue appears.

Now, lets look through the tutorial to find related information.
It is a special battery to provide a continuous power supply to the CMOS chip on the computer motherboard.
After shutting down the PC, these tweaks are still kept on the CMOS battery.
On laptops and desktops from Dell, HP, Lenovo,etc., a CMOS battery exists.
However, sometimes the CMOS battery goes wrong or dies, leading to some errors & issues.
Next, lets talk about some bad CMOS battery symptoms.
Your PC May Not Start
BIOS needs a continuous power supply to boot up the PC properly.
When the CMOS battery dies, it cannot provide the power.
As a result, boot issues happen.
Can a PC Run Without It.
#2.
Checksum Errors
Checksum errors are the most common signs of a CMOS battery failure.
Usually, the errors appear when a conflict between the BIOS and the CMOS occurs.
In this case, your PC fails to read startup information or the information doesnt match BIOS.
#3.
No matter how many times you set the correct date and time, you always see the default values.
If you notice this situation, your CMOS battery could die.
#4.
Drivers Not Responding and Various Hardware Failures
Drivers are responsible for running hardware devices properly.
Then, the machine cannot recognize the hardware, leading to various issues & failures.
#5.
Constant Beeping Noise
Your motherboard may make a constant beeping sound.
If you hear 10 short beeps, this means your CMOS battery goes wrong.
Your CMOS battery may be at its last stage and you should fix it as soon as possible.
The malfunction wont cause any data loss and files saved in it wont be impacted.
After replacing the CMOS battery, you could still store pictures, videos, documents, and more.
Step 2: bring up the CPU cover.
Step 3: Find your CMOS battery, remove it, and load the new one.
Step 4: Cover the PC, boot the machine, and see if your PC can run properly.
If you suffer from one typical symptom, make a run at replace this battery.
Hope this post can help you a lot.