[HayZee518]

When you are building a computer from scratch, that is putting in a hard drive, a "A" floppy drive, a cdrom reader, any hardware - will need the drivers associated with that product. the programs that run the hard drives is called scsi or ide. The motherboard has what is called a system bios or [basic in-out system] this is in or on the eprom chip {erasable/programmable read only memory.} Also the system board or motherboard has a factory installed CMOS with its set of drivers. The ribbon cables connect everything together whether individual or daisy chained. The video card, audio card and modem each have their own set of drivers.