1. A method for express execution of multimedia playing with a touch-control interface for a computer system, the computer system having a data storage, a system memory, a BIOS, a touch-control display device and at least an audiovisual player, the data storage storing an operating system, a touch-control display device driver, audiovisual player drivers, and audiovisual player application programs, the method comprising the steps of: (a) turning on the computer system; (b) executing the BIOS of the computer system; (c) before loading and executing the operating system, performing the steps of: (c1) detecting the touch-control display device and audiovisual players connected to the computer system; (c2) loading and executing the touch-control display device driver to start the detected touch-control display device; (c3) the touch-control display device displaying icons representing the detected audiovisual players connected to the computer system; (c4) detecting whether a selection is made by touching the icon displayed on the touch-control display device; (d) loading and executing the operating system from the data storage when the icon representing the audiovisual player is touched; and (e) executing the audiovisual player application program corresponding to the touched icon.