Nowadays electronics uses advanced power control, it means that if it is not in use, it will not take as much electricity as when you are using it. It's especially important for laptops. For instance, many processors can adjust it's frequency depending on load. It means when you are watching movie the CPU is used 100%, but when you are reading news or you went away for some time CPU reduces its frequency sometimes as much as two times which allows to save a lot of battery energy.
there is no bios setup program but BIOS stands for basic input output system
To access the power management setup screen or ACPI settings, restart your computer and enter the BIOS/UEFI setup by pressing a specific key during boot-up, typically F2, Del, or Esc (the exact key varies by manufacturer). Once in the BIOS/UEFI interface, navigate to the "Power Management" or "Advanced" tab, where you'll find options related to ACPI configuration. Make any desired changes, then save and exit the setup to apply the settings.
In the BIOS setup program.
The BIOS Manufacter
typical MOST BIOS start ups contain Advance BIOS Features Advance Chipset Features Integrated Peripherals Power Management Setup then under them are more options etc
By pressing certain keys (depending on the specific computer and BIOS program) during the boot process, ex: F12, F2, F8,
CMOS Setup
BIOS setup is accesses most of the time by pressing the DEL key on bootup. On some computers it is F10, F2 or rarely F8.
Basically a program in the BIOS (Basic Input/Output System) in a computer that can change the value of the CMOS RAM.
CMOS settings are altered by the BIOS program while in setup mode.
On power-up. You need to tap the escape key to stop the operating system loading, and enter the BIOS set-up screen.
Yes!