What is BIOS? How to access it!!

 

BIOS is short for Basic Input/Output System, also known as system BIOS, ROM BIOS or PC BIOS. It is a firmware embedded on the chip on the computer's motherboard. BIOS firmware is pre-installed on the motherboard of a PC. It is a non-volatile firmware which means its settings won’t disappear or change even after power off.

It is not hard to understand how BIOS works. When your computer starts up, the BIOS loads and wakes up the computer's hardware components, making sure they are working properly. Then it loads the boot loader to initializes Windows or any other operating system you have installed.

What you need to know is, the BIOS must run in 16-bit processor mode, and only has 1 MB of space to execute in. In this case, it has trouble initializing multiple hardware devices at once, leading to a slower boot process when it initializes all the hardware interfaces and devices on a modern PC.

Although BIOS is a little bit outdated. There are still some users using BIOS, especially for users who have used their computer for many years. Sometimes they need to go to BIOS to change boot order if they have system boot issues. Then how to access BIOS?

How to Access BIOS

The BIOS setup utility is accessed in various ways depending on your computer or motherboard. Normally, you can access BIOS by pressing a specific key while the computer boots like Delete, Esc or F2. The key to enter BIOS can be different according to different types of your computer.

In the BIOS setup screen, you can configure various settings like the hardware configuration of the computer, system time and boot sequence, etc. The setting results will be saved to the memory on your motherboard. After this, you can start your computer, and the BIOS will configure the PC with the saved settings.