Before the computer can access the main OS, it's going to need a little help.The basic instructions that a computer uses to get up and running are contained in the BIOS (basic input/output system).Some older drives don't have the capability to communicate that information to the BIOS and the parameters have to be set manually.Thankfully, most of the older drives have been taken out of service.The information in the BIOS allows the computer to interface with the monitor, keyboard and mouse (among other things) until the OS can take over.
It is supposed to offer the highest level of protection for your data. It allows you to increase the speed of the processor but you have to be careful.This is the first page you'll see when you get into this particular BIOS. Other computer manufacturers produce their own BIOS software/firmware.The appearance and features of the various BIOS configurations from various manufacturers vary significantly. Above, you can see that the 'Standard CMOS Features' is selected.Both newer and older motherboards will have different options/features. Others may have a different type of BIOS and may look significantly different.For most motherboards, the owner's manual is available online at the manufacturer's web site.
If you hit the ENTER key, you get the screen below.