The main purpose of the BIOS is to check all the hardware components attached to the computer and then to load the software on a boot device (hard disk or CD/DVD). The BIOS will check for all hardware components like hard disk drives, CPUs, RAM, graphics cards, keyboards, mice, optical disk drives, and other hardware. Mainly, you can use it to configure the hardware on your computer.
You can modify settings for hard drives, RAM chips, the CPU and other hardware.
For this reason, it's worth checking whether you really need to update your BIOS.
Read the release notes of the latest version (and each version back to the one currently installed) to see whether it will add the features you need or fix a problem you're having.
See also: How to install Windows 7 Before you start, heed this warning: if something goes wrong during the BIOS update, your computer could be rendered useless.
It is the first software your PC loads so that it can use things like CD drives, mice, and keyboards practically from the moment you turn it on.
I’ll try to list out the pros and cons of both schools of thought.
Feel free to let us know what you think in the comments.
For example, a BIOS update may help solve an overheating issue.
Also, many BIOS updates are released that simply support new hardware like a new CPU model or graphics card.