I do not know how the computer is starting up, so I took out my professional maintenance there, they told me is power supply, and then there was built a few hours, my computer can be started, particularly important above I need to work things. I can only hope to hurry up, I can go to complete the task, they gave me a re examination of the power supply and other aspects, there should be no problem what, I just took the computer back, it seems that after I also want to learn some knowledge about the maintenance and common sense, to their own a good improvement, innovation constantly to make better.