CMOS battery is a piece of hardware that powers the BIOS firmware in a laptop. Even when your computer is not plugged into a power source, BIOS must continue to function (It instructs the system ...

Some key computer functions are governed by the CMOS (Complementary Metal-Oxide-Semiconductor), a chip on your motherboard powered by a small battery. The CMOS governs things like the system time ...

A CMOS battery is installed on all computers that provide the continuous power supply to the BIOS chip so that all the BIOS settings remain saved even after the computer is turned off. Removing ...

he would have to open the laptop case and short the CMOS reset pins or pull the CMOS battery. The process is quite tedious, so he prefers to use a simpler method, a parallel loopback plug.