Monday, April 14, 2008

CMOS Battery Replacement

Warning: Before touching any parts inside your Computer case, remember to observe proper anti-static precautions when operating inside the case of your PC. If you do not have a anti-static strap, rub your hands on the metal portion of the case to get rid of static.


The CMOS Battery

CMOS - is an abbreviation for Complementary Metal Oxide Semiconductor

What’s the use of this CMOS battery?

CMOS battery is the one that stores the system configurations, especially the BIOS settings and system clock.

You would notice that even if we don’t use our computer for several days, the system configuration has not change and the computer clock is still accurate.

There are different kinds of CMOS battery.

This kind of CMOS battery is used by old Computers.

(Image compliment of Google)

Latest Computers use this kind of battery. It is called lithium battery. Some information says that CMOS batteries can last up to ten years.

So if your computer is still within that range, you have nothing to worry about.

But once your Computer started to halt and with this kind of message on your monitor.

“System Configuration Change. Default Loaded”

It means that your CMOS battery is starting to fail. But you can still continue computing by pressing F1 or whatever keys your computer told you to press.

It’s time now to change your CMOS battery. Changing the CMOS battery is just easy. You don’t need a Computer technician if you like. All you need to do is buy a replacement battery. Open your computer case and locate your CMOS battery. Some CMOS batteries can be changed by lifting the pins on top of it or pressing the pins on the side. It depends on what brand of motherboard your computer has.

But before doing this, always observe the proper precaution about static electric charge. Also, you need to enter the BIOS setup and write down special settings on your BIOS so you can restore it after replacing the CMOS battery.

How to replace the CMOS Battery. Just lift it up using your fingernails or any other sharp object.