Press the F2 key several times at the Dell logo screen during startup. To access the BIOS or System Setup on Dell computers, follow these steps. The BIOS or UEFI activates all the basic hardware that is required to boot the operating system when the computer is turned on. It acts as an interface between the computer's hardware and the operating system. BIOS or UEFI is firmware that is embedded on a small memory chip on the computer's system board or motherboard. Modern Dell computers come with Unified Extensible Firmware Interface ( UEFI). When available, closed caption (subtitles) language settings can be chosen using the Settings or CC icon on this video player.īIOS also called System Setup is an acronym for Basic Input or Output System.