Computer BIOS is software that is usually stored on a flash memory chip and is located on the motherboard. What BIOS does is make sure that the CPU, hard drive(s), ports, and other chips in the computer work together. Computer BIOS plays a huge part in starting up a computer. The BIOS provides the CPU with the instructions to start the operating system. A computer might have more than one bios chip.
For example: A video card might have its own bios chip installed. The BIOS settings are in charge of things like the monitor, keyboard, and other ports on the computer especially when the computer system is starting up. Upon starting a computer system, the bios runs a POST to check all of the hardware components to make sure they are functioning properly.
At times a Computers BIOS and its Drivers will need to be updated. This is usually true with older computers because with the arrival of new technology, new standards will arise, and the BIOS and Drivers will need to change in order to understand the new hardware. A driver is a software program that controls a device. Every device like a printer, disk drive or keyboard has a driver.
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Whenever you startup a computer, the first thing you see is the BIOS software running. To enter the BIOS setup you will have to press a certain key or combination of keys in the initial startup screen (Esc, Del, Ctrl-Esc, F2, F1, Ctrl-Alt-Esc, ect…). There is usually a command line that shows up. When it does, press the specified key or keys to enter setup. Depending on the BIOS manufacturer you will see a number of options. (Examples: time/date, memory, plug and play, security, power management, boot sequence, drive configuration, exit, ect…) Be cautious when making changes to the setup. Some changes can cause the computer to not boot properly. When you finish you should save your settings and exit. The BIOS should restart your computer and the new settings should take effect.
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