For older systems that rely on the CMOS battery rather than flash RAM memory storage for such settings, it can be more of an issue to lose any power to the battery. This can depend on how old a system you are running. What Happens if You Don’t Have a CMOS Battery?
This can also help you replace a laptop battery without losing settings while the device has no power. The RTC battery is the thing that keeps track of your computer’s real-time clock, even when it is unplugged from the power source. This newer method of storage achieves the same effect but eliminates the technical need for the more traditional CMOS battery that might have been on the motherboard. Not all laptops have a CMOS battery because instead, they use a soldered RTC battery to achieve many of the same effects.ĬMOS settings are still present and necessary within these systems, but they are usually stored in flash RAM memory instead. If your laptop is brand-new or only a few years old, it is less likely that it has a traditional CMOS battery. This will allow you to check for CMOS batteries without opening the casing. One of the easiest ways to check and see if a CMOS battery is present is to see if your laptop manufacturer put one in your model. It is possible that your laptop doesn’t have such a battery, and you may be wondering how it can function at all without one. Why Doesn’t My Laptop Have a CMOS Battery?
#COMPUTERS CMOS BATTERY HOW TO#
Additionally, BIOS tells a computer’s hardware how to function, and this includes vital components like the hard drive.Īs you might imagine, proper BIOS settings are necessary for a computer’s standard operations, including starting it up at all. These settings tell a computer how to boot up and help it maintain control of and access to things like your keyboard. A BIOS on a computer is, in part, a lot of the information you will see if you watch the computer screen when everything first starts up. However, it is also true that some laptops will have a CMOS battery installed.Ī CMOS battery is vital in helping a computer maintain its BIOS settings.
#COMPUTERS CMOS BATTERY PORTABLE#
It is crucial in both systems, but manufacturers and developers have found a different way to address BIOS concerns and settings regarding portable computers. Here are links to buy good quality CR2032 batteries for your Motherboard.A CMOS battery will be present in standard desktops. Start your computer and change your Date & Time settings to the current and also your BIOS settings if required. Insert the new CMOS battery in the slot and the locking mechanism will automatically hold the battery.ħ. Sometimes you may have to press and hold the lock /clip mechanism when removing the battery.Ħ. Press the Lock / Clip sideways to release the old CMOS battery.ĥ. Locate the CMOS battery on motherboard.Ĥ.
Turn Off your computer and turn off the mains power.ģ. Just follow the below mentioned steps to replace your CMOS battery with a newer one.ġ.
How to change or replace CMOS batteryĬhanging your motherboard CMOS battery is very simple. If you are changing some BIOS settings and if they are not getting saved and resets to default values when you turn ON your computer then it is the time to change your CMOS battery.
#COMPUTERS CMOS BATTERY WINDOWS#
If you Windows / OS / BIOS time changes every-time you turn ON your computer then it is clear cut sign that your CMOS battery is dead and needs a replacement.
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