BIOS is a driver/software which runs every time when a Windows computer starts. When you start a computer, the BIOS runs first.
What is doing? BIOS is checking the main hardware components (processors, memory, motherboard, sound card ..) to see if they are working properly and if there are any errors. Usually, there aren’t any errors and the computer will continue to load the operating system.
Why do you need BIOS? You can make different basic adjustments for hardware configuration, such as the boot order (where the computer will look to load the first program), change date and time for PC , set a password at BIOS level.
1 Restart the computer
There isn’t an universal key to enter in BIOS, so it depends what brand of computer or laptop do you have.
When the PC starts, you need to read which key you have to press in order to enter into BIOS menu. If you don’t se the key, restart the PC until you see it.
2 Press the special key
3 The BIOS
In this menu you can navigate with arrow keys and if you need to exit, go to Exit, then press Enter or follow the instructions from the screen.