BIOS

The BIOS (Basic Input/Output System) is software stored on a small chip inside a computer that starts the machine when you turn it on. It performs initial checks on hardware components like the memory and storage, ensuring everything is working correctly. After these checks, the BIOS hands control over to the operating system (like Windows or macOS) to start up normally. Think of it as the computer’s first responder that prepares the system for use, making sure all essential hardware is ready for the main software to operate.