New Computer Desktops have come a long way from the boring, beige boxes of old.Get the desktop with the personality you want and the productivity you need.All-in-one Computers are desktop computers that combine the computer's internal components into the same case as the monitor.An operating system is the program that after being initially loaded into the computer by a boot program, manages all the other programs in a computer.Though the hard drive bays offer tool-free access, you'll have to break out a screwdriver to get at the graphics boards.The cables are routed through grommets into a chamber on the opposite side of the motherboard, leaving the main cavity of the PC readily accessible should you need to make changes inside.