The is low-level firmware stored on a motherboard chip. It initializes hardware components (CPU, RAM, storage) before handing control over to the operating system. Over the last decade, BIOS has been largely replaced by UEFI (Unified Extensible Firmware Interface) , which offers faster boot times, support for drives larger than 2TB, a graphical interface, and critical security features. In the context of Windows 11, when people refer to "BIOS version," they almost always mean the UEFI firmware version.
The BIOS, or Basic Input/Output System, is firmware that controls and configures the hardware settings of your computer. It's stored in a chip on the motherboard and is responsible for: bios version windows 11