BIOS or Basic Input-Output System is inbuilt software on the motherboard of a computer. It is the program that the microprocessor of your computer uses to get your system started once you switch it on. BIOS also acts as a manager of data flow between the operating system of the computer and attached devices like keyboard, hard disk , mouse, printer and others. There are times when you have to update the BIOS of your computer and being little complicated, it needs some precautions. You can consult the experts of computer repair services team to get required technical guidance for this process or you can read the following to handle the matter on your own.