![]() It’s only when your laptop is unplugged that the battery loses charge. The CMOS battery gets charged whenever your laptop is plugged in. Most desktop PCs are unplugged from their power source very infrequently. That’s because laptops are usually unplugged for a longer amount of time than desktop PCs. You’ll find CMOS batteries in both laptops and desktop PCs, but it’s used more frequently in a laptop. When your computer gets unplugged, BIOS relies on the CMOS battery for power. īIOS needs to remain operational even when your computer isn’t plugged into a power source. We’ll teach you how to use BIOS to overclock at the end of this article.ĬMOS stands for “Complementary Metal Oxide Semiconductor.” The CMOS battery powers the BIOS firmware in your laptop. You can program your computer for overclocking by adjusting the BIOS settings. If you’re a PC gamer, you might be interested in learning how to overclock your computer to boost your processing speed while you’re gaming. Booting up your operating system is the basic output. It performs basic functions for your computer while your computer is still waking up. You press the power key to turn on your laptop, right? Well, how’s your laptop supposed to process the power key when the laptop is turned off? That’s what the BIOS is there for. BIOS instructs your computer on how to boot up the operating system, and it also operates the peripherals (like the mouse and keyboard). The BIOS is tasked with managing your computer’s exchange of inputs and outputs, mostly when you’re booting up your computer.
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