The Basic Input/Output System (BIOS) is a crucial component of a computer's motherboard, responsible for initializing and configuring the system's hardware. In some cases, users may need to reset the BIOS settings to their default values, a process commonly referred to as a "BIOS reset." This can be necessary due to various reasons such as incorrect configuration, password forgetting, or hardware compatibility issues. This paper provides an in-depth examination of resetting Dell BIOS settings using a bootable ISO, specifically focusing on the "dellbiosresetiso" method.