After pushing the power switch of the PC to the ʺonʺ position, Bob, the PC repair person, realizes that the power-on lights found on the monitor and computer case do not light up and nothing displays on the screen. The first thing that Bob does is check the power plugs found on the back of the computer case and monitor. Bobʹs actions best illustrate the use in solving a problem. 1. Professional and technical training
2. Logic3. Communication
4 .Beginnerʹs luck