

The BIOS in modern PCs initializes and tests the system hardware components ( Power-on self-test), and loads a boot loader from a mass storage device which then initializes a kernel. The interface of that original system serves as a de facto standard. The BIOS originally proprietary to the IBM PC has been reverse engineered by some companies (such as Phoenix Technologies) looking to create compatible systems.

The name originates from the Basic Input/Output System used in the CP/M operating system in 1975. The BIOS firmware comes pre-installed on an IBM PC or IBM PC compatible's system board and exists in some UEFI-based systems to maintain compatibility with operating systems that do not support UEFI native operation. In computing, BIOS ( / ˈ b aɪ ɒ s, - oʊ s/, BY-oss, -ohss Basic Input/Output System, also known as the System BIOS, ROM BIOS, BIOS ROM or PC BIOS) is firmware used to provide runtime services for operating systems and programs and to perform hardware initialization during the booting process (power-on startup). The bottom one shows the distinct window of an EPROM chip.

This feature is only available on 20 models.A pair of AMD BIOS chips for a Dell 310 computer from the 1980s. Accepted values are 2-7, where 2 is the fastest and 7 is the slowest. Values represent a few seconds each, where 0 is the fastest and 9 is the slowest.ĭetermines how quickly the fans accelerate or decelerate when it is time to change fan speeds. Only available in Discrete Graphics Mode (Hybrid Off).ĭetermines how often LegionFanControl should check the current temperature before deciding to change fan speed or not. Removes laptop control of the fans so they run at their factory maximum speeds. Some users may want to disable this behaviour if they use other tools to manage their Windows Power Plan switching events Will also switch corresponding Windows Power Plans if they existĬhoose whether switching the Legion Power Mode will also switch the corresponding Windows Power Plans if it exists.

Create a custom fan curve for each Power Mode.
