Feb 18, 2017 · Your computer's BIOS is the first thing that loads when you start your computer. It initializes your hardware before booting an operating system from your hard drive or another device. …

When you turn on your computer, the BIOS (Basic Input/Output System) is the first thing that runs. It checks that all your computer parts are working, then loads Windows, macOS, or whatever operating …

Aug 19, 2024 · When your computer first starts up, it uses the BIOS (or UEFI in more-modern PCs) to find out everything about itself, from the components its running, to the voltages they should receive.

Learn what is BIOS and how to access it with our complete guide. Discover the role of firmware in starting your PC, its functions like POST, and get steps.

In computing, BIOS (/ ˈbaɪɒs, - oʊs /, BY-oss, -⁠ohss; Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is a type of firmware used to provide runtime …

Sep 17, 2025 · BIOS is alternately called ROM BIOS, PC BIOS, and System BIOS. BIOS is the first software that runs when you power on your system, performing an initial pack of diagnostic tests …

Jul 9, 2021 · BIOS, which stands for Basic Input Output System, is software stored on a small memory chip on the motherboard. It's BIOS that's responsible for the POST and therefore makes it the very …

Nov 3, 2020 · BIOS identifies, configures, tests and connects computer hardware to the OS immediately after a computer is turned on. The combination of these steps is called the boot process.

Jul 13, 2025 · What Is BIOS? BIOS stands for Basic Input/Output System. It is a low-level software embedded into a small memory chip on the motherboard—called the BIOS chip—that initializes …

Sep 7, 2025 · Short for Basic Input/Output System, the BIOS (pronounced bye-oss) is a ROM (Read-Only Memory) chip found on motherboards that lets you access and set up your computer system at …