Using the multimeter and turn it to the buzzer file to check the net card, it is normal for the north and south wires, you can know that it is the short circuit that makes the computer fail to turn on.Uninstall it and check, change the net card chip and connector, as well as replace the burning resistance, then the motherboard returns to the normal operation situation and the computer can work normally too. motherboard shop back home and protect it well, only in this way can you computer works steadily for a long time, as it is an important role of computer.
Every year, there are many computers become damaged because of the lightning, and people seldom know about the lightning and static, therefore, they don’t know how to protect their computers from lightning. Especially when you Buy motherboard, you need to learn more.
It is hard to identify the problems of motherboard if it was lightning, which also cause many confusing for repairing it. It is really a sad thing if you just Buy motherboard not long ago. And now, during the independent test, if the motherboard can power on, on condition that the computer is power off, the temperature of net card chip is terribly high. It may be shocked by, lightning in the first step, causing the short circuit of the motherboard and can’t turn on the computer normally.