C MOS battery, small objects which are often forgotten, or even you do not already know this one thing. It's because the C MOS battery has become part of the mainboard on the purchase package. This is what makes people who do not know what the C MOS battery. The shape is small but has a function which is quite important for your computer.
The main function of the C MOS battery is to supply power for the BIOS to do the setting of a mainboard. You need to know, the BIOS is an application built from the mainboard to be able to control and detection of other components which connect to the mainboard (other hardware). Through the BIOS, you can make arrangements on the performance and functions of a mainboard. BIOS has its own chipset in a mainbord, with sizes small enough (about 1cm). BIOS chipset that is located near the C MOS battery. Besides these main functions, the BIOS has a function to adjust the time (hour and date) your computer. In the BIOS you can make configuration settings such as BOOT Device, Video Share, CPU Speed, and others.
By the time you turn on the computer the first time, will appear a screen which gives a few seconds for you to enable setting up your computer BIOS. Display only lasted less than about 5 seconds before the computer loads the Windows or other operating systems. It is common for ordinary people to enter the BIOS is not really necessary, because the BIOS settings by default is enough to be used. You can enter the BIOS by hitting DEL or F2 key, the public key used to enter the BIOS.
Therefore BIOS functions are quite important in your computer, as well as the role of the C MOS battery that supplies power to the BIOS to work is very important. Although the C MOS battery has run out, the BIOS would still work with the old settings without being able to be changed. So, if the BIOS is no longer able to perform its duties as normal, the possibility that there are changes on your computer, especially for introducing new hardware-hardware can not be done. For example you would install a new component of your computer (VGA example), then the mainboard is not able to recognize these components and is considered absent. The second example, when you make changes to BIOS settings, such as changes in the Boot able Device, then after you restart the computer settings will return to its original setting. Usually the display will appear on the screen that eror BIOS settings, and you can not directly booting Windows, usually pressing the F1 or F2 to resume booting.
C MOS Battery life approximately 5 years, so you can replace the C MOS battery after your computer was 5 years old. Powerful way to find out the C MOS battery has run out its power is to put the battery on your tongue, if there is a small sting is still there then the battery charged, if not then the battery must be replaced immediately.
