CMOS batteries power code that runs before the operating system is loaded in a computer. Common tasks completed before your operating system loads are activating the keyboard, loading the system drives and setting the sy... More »

The CMOS battery powers the Complementary metal-oxide-semiconductor. CMOS is the small amount of memory on a motherboard that ensures that the BIOS, or Basic Input-Output System, does not lose all of its data every time ... More »

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The main function of the BIOS (Basic Input Output System) is to boot up an operating system on a PC. It does this by first identifying and testing all hardware components (including the hard disk and floppy drives), and ... More »

The complementary metal-oxide semiconductor, or CMOS, chip is a motherboard component that stores the basic input/output system, or BIOS, settings of the computer. It comes with its own battery power to retain stored inf... More »

A computer's clock can lose or keep incorrect time because of a failing CMOS battery, failure to synchronize the system clock with a time server, setting the wrong time zone or the presence of a malware. Insufficient ope... More »

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Changing the CMOS battery on a laptop involves opening the laptop case, locating the battery and replacing it with a new one. While the process may seem easy, precautions must be taken as damage can be done to the system... More »

The CMOS battery powers the Complementary metal-oxide-semiconductor. CMOS is the small amount of memory on a motherboard that ensures that the BIOS, or Basic Input-Output System, does not lose all of its data every time ... More »

www.reference.com Technology Computers & Hardware