1. The System starts the BIOS, that is, the Basic input-output system (basic input-output System) of the microcomputer, which is a ROM chip integrated on the motherboard, which stores the most important Basic Input\/Output program of the microcomputer system, system information setting, power-on self-test program and system startup bootstrap program.
2. The BIOS ROM chip is displayed on the mainboard. The configuration of the microcomputer components is placed in a readable CMOS RAM chip, which saves the information of the system CPU, hard disk drive, display, keyboard and other components. After shutdown, the system supplies power to the CMOS through a backup battery to keep the information in it. If the configuration information about the microcomputer in CMOS is not correct, the system performance will be reduced, the parts can not be identified, and the hardware and software failure of the system will be caused.
3. There is a program called \"system setup program\" in the BIOS ROM chip, which is used to set parameters in CMOS RAM. This program is generally entered by pressing one or a group of keys at boot time, and it provides a good interface for users to use. 4. This process of setting CMOS parameters is also known as \"BIOS setting\". BIOS Settings are required for newly purchased microcomputers or systems with newly added components.
First of all, you have to figure out the connection and difference between bios and cmos. BIOS Settings are not stored on the hard disk or in memory (main memory). The BIOS is indeed a CMOS control program, which exists in a CMOS RAM chip and is located on the motherboard. You can clear the COMS password with a jumper.