As the BIOS data is dependent on the CMOS memory and battery, the BIOS may frequently get reset due to a malfunctioning battery. This in turn also resets all BIOS-level passwords on your system.

You need to begin by locating the CMOS battery, which is a thin, round, button-like object. It can sometimes be hidden by extension cards or connectors. On older PCs it may have a cylindrical shape.

The CMOS battery is an often overlooked but crucial element. Hidden on the motherboard of your computer, it acts like an emergency power supply for the BIOS.

PCs have a battery on the motherboard that provides the Complementary Metal-Oxide Semiconductor with a minimal amount of power, even when unplugged. This CMOS battery lets the system clock keep ...

Download and launch BIOS update from the motherboard manufacturer's website. Another is by reinitializing the BIOS. Certain motherboards allow you to reset the BIOS settings directly with a switch. If ...

How to Check the Battery Level of the BIOS. If you have owned your computer for a few years, you may notice certain problems, such as it may no longer remember the current time and date, certain ...

If you're getting errors when you boot your PC, the problem may be nothing more than a dead CMOS battery. Fortunately, they're cheap and easy to replace--on desktops, anyway.