Why nobody has every boot?

I use the back of the chassis jack, no previous problems, the recent start of each are silent, we should pull the plug and play several times before the voice, and then there is no any problem can also start the next event The problem is the same to what has gone wrong?
(Behind the jack did not play a sound, if there in front of the jack ……)

Yin Kong by a software useful to try to transfer some of your audio cable in question, is estimated to have been destroyed, under the dynamic there, the next move does not, it is estimated that rat bite is bad That is a plug your headphones or else the problem will not be a problem back in front and there is no problem, I machine before such a problem.Will not always plug would not be a problem.