When you disconnect your computer’s power supply from the wall, it jumps in to save your BIOS or UEFI settings in your motherboard’s CMOS-RAM (Complementary Metal-Oxide-Semiconductor). But even the ...

CMOS stands for Complementary Metal Oxide Semiconductor and despite its size, it does much more than you think. Let’s clarify a few things first. A CMOS chip is vastly different than the CMOS battery ...

ANSWER: A desktop computer’s CMOS battery – or complementary metal-oxide semiconductor – is used to maintain the time and date. When you turn on the PC, it will think the date is Jan. 1 if the battery ...

How often should I change the battery? Ideally, this battery is due for a replacement once every five years and must be replaced with great care to avoid causing other problems in the PC. Saving BIOS ...