What is the function of the BIOS in a computer system?

The BIOS, or Basic Input/Output System, plays a crucial role in the boot process of a computer system. Its primary function is to initialize and test the system hardware components when the computer is powered on. During startup, the BIOS performs a series of checks known as POST (Power-On Self-Test) to ensure that essential hardware, such as the processor, RAM, and storage devices, are functioning correctly.

After the initial hardware checks, the BIOS locates and executes the bootloader, which is responsible for loading the operating system into memory. This process is fundamental to ensuring that the computer can start up and operate effectively. Without the BIOS performing these critical initialization tasks, the computer would not be able to transition from a powered-off state to a fully operational state.

The other options do not accurately describe the BIOS's function. While it is essential for running software applications, connecting to the internet, or editing code, the BIOS is not directly involved in those activities; it is primarily concerned with system initialization and hardware management during the boot process.