What is the main function of the BIOS or UEFI when a computer is powered on? Run antivirus software Check the hardware components Load the operating system Connect to the internet

The main function of the BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) when a computer is powered on is to check the hardware components and load the operating system. BIOS/UEFI is the first software that runs when you turn on your computer. It performs a Power-On Self Test (POST) to check the hardware components such as the CPU, memory, and storage devices. Once the POST is completed successfully, BIOS/UEFI locates and loads the operating system from the storage device into the computer's memory, which allows the user to interact with the computer.