My laptop has a loud buzzing sound It is not coming from the speakers What do yo

[vivianmcrae43]

My laptop is an Averatec. It is making a lod buzzing sound. I muted the speakers and it is still buzzing. I think it is coming from the fan. What do you think and what should I do?

 

[glorym]

maybe current sound...or something of that, because of the electromagnetism，something trembling.