If you’re trying to change the CMOS battery in your device but don’t want to lose any of your settings, you’ve come to the right place! This article will provide helpful advice Changing CMOS Battery without Losing Settings. We’ll explain why and how CMOS batteries are used, what might happen if they fail, and the steps to take when replacing them.

Changing CMOS Battery without Losing Settings

Changing CMOS Battery without Losing Settings

To change the CMOS battery, you will need a few clips leads to hold it in place while you remove the old one from its socket on the main board. It would help to use a replacement battery with the same voltage as the original (typically 3 volts).

One of the most important things to remember when changing your CMOS battery is to avoid touching other objects with the clips while handling it. The circuit is still active and running, so you could accidentally short-circuit some other component without being careful. Be sure also to handle the clip on a non-conductive surface, such as a plastic or rubber mat, to avoid electrostatic discharge (ESD) damage.

Another crucial point is that data stored in your computer’s BIOS chip is confidential and has security implications. If your CMOS battery is suffering from a heating problem, change the EVGA/RGB fan or any other fan you are using on your device, but first, you have to select which one is better for you, like EVGA or KR.

The key is to run those cables to another battery, such as a cowboy circuit, and connect it in parallel. This way, the old battery can be replaced without interrupting the power flow to the system.

Phrasing your query correctly is crucial when changing a CMOS battery without losing any settings. Understanding how the system works and what you need to do to ensure that everything operates smoothly after replacing the battery is essential. You can check battery with multimeter. Following these simple steps, you can quickly return your CMOS battery and maintain your custom settings.

Why do I Need to Replace My CMOS Battery? How I can replace it?

If you’re experiencing issues with your computer, such as the incorrect date and time settings, error messages on boot, or a faulty CMOS checksum, it could be due to a problem with your CMOS battery. Here are some reasons why you may need to replace it:

  • Your computer is displaying an “Error on CMOS” message: This could indicate that the battery is not providing enough power to maintain the BIOS settings.
  • The fault in your CMOS checksum: If there’s an error in the BIOS settings, it can sometimes be resolved by replacing the battery.
  • Your computer is running slow or experiencing low system performance: Your computer or laptop battery cloud be draining fast. A failing CMOS battery can cause these symptoms by preventing proper communication between hardware components and software.

Locate Your CMOS Battery

Changing CMOS Battery without Losing Settings

Without a functioning CMOS battery, you may experience issues with your computer’s startup or other critical functions. To locate your CMOS battery, consult your motherboard manual for its exact location.

The most common type of coin cell used for the CMOS battery is a CR2032. This small but powerful lithium-ion battery provides long-lasting power for your motherboard’s BIOS chip.

When replacing or handling a CMOS battery, taking precautions against electrostatic discharge (ESD) is essential. ESD can occur when handling electronic components and damage sensitive motherboard circuitry. To prevent ESD damage, use an anti-static wrist strap or touch a grounded metal object before handling electronic parts. Avoid wearing clothing made from synthetic materials that can create static electricity.

Obtain Battery Information

Changing CMOS Battery without Losing Settings

When obtaining battery information for your computer’s CMOS chip, there are a few key specifications to be aware of.

  • The voltage rating should match the voltage required by your device.
  • You need to consider the battery’s chemistry; the most commonly used with computers is CR2032 Lithium-ion batteries due to their high energy density and long lifespan.
  • You must also pay attention to wiring specifications, as incorrectly wired storms can damage your device.

Removing the Battery

Removing the CMOS battery from your motherboard is easier. You can replace the battery and restore your computer with just a few simple steps.

  • Locate the CMOS battery on your motherboard. It should look like a small, round button cell attached to the board with a clip or holder.
  • Carefully grab the edge of the battery and gently lift it out of its holder.
  • If your motherboard has a pin holding the battery, use your fingers or a small screwdriver to release it before removing it.
  • Make sure to handle the CMOS battery carefully and be familiar with ESD precautions to avoid damaging any components.
  • If you need help removing your CMOS battery or do not have experience working with computer hardware, refer to your motherboard manual for specific instructions on safely removing and replacing this component.

Insert the New Battery

Carefully remove the old battery by gently prying it out with your fingers or using a flat-head screwdriver if necessary.

 Please insert the new battery into the same slot making sure that you align its positive (+) side with the positive (+) symbol on the motherboard or socket.

Enter CMOS Values

To enter CMOS values, restart your computer and press a specific key during startup (usually F10). Once inside the BIOS setup utility, navigate to the section where you can input new CMOS values. You may also need to reset the CMOS values if there is an issue with your computer’s hardware configuration or if you have made changes causing problems.

When all necessary changes have been made, it is essential to save the new settings before exiting the BIOS setup utility.

Bad Hardware

If you have taken all the necessary steps to replace your CMOS battery and are still experiencing issues with your computer, a more severe problem may be at play.

One potential culprit could be a defective motherboard. If your motherboard is damaged or malfunctioning, it can cause problems with your computer’s hardware and software. Replacing the CMOS battery may not make much difference in resolving these issues. It would help if you took your computer to a repair facility where a qualified technician can diagnose and fix any lousy hardware.


Changing CMOS Battery without Losing Settings is a relatively simple procedure that anyone with a basic understanding of computer hardware can undertake. With the right tools and knowledge, you can expect to have your computer’s CMOS battery changed in no time. It is important to remember that many computers do not need their CMOS battery changed, so it is best to consult a professional before attempting this task yourself.

Frequently Asked Questions

Can Changing CMOS Battery without Losing Settings is easy?

You can change the CMOS battery without losing settings. The CMOS (Complementary Metal-Oxide Semiconductor) battery is a small lithium battery that powers the BIOS on your computer. It stores all of your system settings, including date and time. When the battery dies, you may need to reset these settings after replacing it.

Will replacing the CMOS battery reset BIOS?

Yes, in most cases replacing the CMOS battery will reset BIOS. This chip stores your computer’s settings and configurations, including system time and date. When the CMOS battery runs out of power, these settings are lost and must be reset manually or by replacing the battery.

Is it safe to replace the CMOS battery?

Yes, replacing the CMOS battery in a PC that is turned on and connected is generally safe. Make sure to discharge any static electricity from your body before touching the motherboard or battery, as static electricity can damage sensitive components. Be sure to use the correct replacement battery for your particular motherboard model and follow the manufacturer’s instructions.

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