What does updating drivers do
There is usually a line of text at the bottom of the display that tells you "Press ___ to Enter Setup."Once you have entered setup, you will see a set of text screens with a number of options.
Occasionally, a computer will need to have its BIOS updated.
On many machines, the BIOS displays text describing things like the amount of memory installed in your computer, the type of hard disk and so on.
It turns out that, during this boot sequence, the BIOS is doing a remarkable amount of work to get your computer ready to run.
The first thing the BIOS does is check the information stored in a tiny (64 bytes) amount of RAM located on a complementary metal oxide semiconductor (CMOS) chip.
The CMOS Setup provides detailed information particular to your system and can be altered as your system changes.
It cannot get it from the operating system because the operating system is located on a hard disk, and the microprocessor cannot get to it without some instructions that tell it how. Some of the other common tasks that the BIOS performs include: The BIOS is special software that interfaces the major hardware components of your computer with the operating system.