If the touch key light does not light up, it means that there is no small light line connected, or the fuse is burned. When the machine is disassembled for dust removal, it accidentally touches the memory or the graphics card, causing poor contact between the memory and the memory slot, poor contact between the graphics card and the graphics card slot, resulting in incompatibility. As a result, the black screen, that is, the machine cannot be started, as long as the memory is unplugged, reinserted, or the graphics card is unplugged, Just plug in again. If you do this, the problem will be solved.
 Introduction to the center console
 The car center console has the function of GPS global satellite positioning system, which can know your exact position anytime and anywhere when driving the car. The car navigation has the functions of automatic voice navigation, best path search and so on. The integrated office and entertainment functions make driving easy and efficient.