![]() Let’s say, for example, that you’re opening up a software program: BIOS is something that’s integrated into the computer while it’s being manufactured.īIOS stands for “Basic Input/Output System.” What exactly does it do? Basically, it manages the essential functions of your computer.Īll computers function through a process of inputs and outputs. Operating systems can be installed, uninstalled, and updated long after you’ve bought the computer. To understand the importance of a CMOS battery, you first need to understand what your computer BIOS is.Įvery computer has BIOS pre-programmed into its hardware. While the main laptop battery powers all of the components from the CPU to the hard drive and tends to be one of the largest and heaviest parts of your laptop, a CMOS battery powers just the BIOS, and is usually coin-sized and lives on the motherboard. Wait, my laptop has more than one battery? In short, yes. How do I replace the dead CMOS battery with a new one?.How do I diagnose a CMOS battery failure?.Thankfully, it’s easy to install a new CMOS battery in your laptop. When it dies, it could cause your laptop to encounter problems booting up. The CMOS battery is a piece of hardware that’s unique to laptops. If you’ve owned your laptop for several years, it’s possible your computer is malfunctioning because the CMOS battery died. Just buy a replacement part and install it.with caution. You don’t always need to shovel out cash for a brand new laptop. HP laptops enable you to make upgrades when a piece of hardware needs replacing. You don’t have to abandon ship when your laptop starts to malfunction.
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