Laptop making unplugging sounds

Hi,

I have had this issue for quite some time now. My laptop has been constantly making unplugging sounds, and seems to think something is being unplugged from the laptop constantly. I have attached a short video to show what I am talking about. It is not very consistent, having days where it goes constantly, and then having days here it only makes the sound once or twice. I have reset drivers, updated them, factory reset the PC, and even reinstalled Windows, and yet the issue persists.

Here is a video showing the issue: https://youtu.be/CTCaVcrJlQs 

The Dell support team have been absolutely useless, constantly insisting that it is something to do with the drivers when it is clearly not, and then refusing to take the laptop back, claiming it is a "software issue" when again, even though I have reset the entire PC. 

I would appreciate any input you guys have!

Thank you