Motherboard: a big circuit board where everything is connected. Hard Drive: a form of digital storage where magnetic disk platters inside the drive (usually 2 or 3) spin at 5,400RPM, 7,000RPM or...
Motherboard Case Power supply optical drive Hard Drive Processor RAM CPU Cooler Case fans Graphics card(Some Motherboards have "onboard graphics") Thats the basic hardware to get a computer running.