OK, so my computer is around 6 years old. This happens a lot, i watch a streamed video, and along the way, at times, the audio would suddenly stop working. I would come back, after restarting several times, or turning on after shutting down, and find the audio works again. But the next day, it stops working. What is the problem here? Also, a few times, the audio shut down, and there would be this ringing noise coming out of the speakers. About a few months ago, the speakers would act weird, in that at times, only one speaker worked, or both didn't work. It should also be mentioned that sometimes the streamed video stops working, or doesn't work at all.