All-round class is a big discount package launched by Xunwei Training Base. You should learn basic computer maintenance, such as motherboard graphics card maintenance, notebook maintenance, data recovery, printer, power supply, LCD monitor, hard disk data recovery. After learning, I will basically repair computer maintenance and have my own ideas. This is an introduction. The specific method depends on you personally. If you encounter problems in the maintenance process, you can find information on Xunwei. At present, most of the maintenance workers are looking for information and drawings, discussing problems and summarizing methods. There are also many experts and online people who can learn a lot from others. After all, it is never too old to learn.