I just bought a new xps 13 ubuntu (1080p + 256gb + 8gb + i7).

Unfortunately, I have to report an issue:  there is a strange, loud electrical noise emanating from under the keyboard - presumably the motherboard.  The noise is constant and enough to drive one mad.  It worsens the more screen activity there is.  Scrolling a web page will elicit a squeal, as will moving the caret when typing.  To make things worse, turning down the brightness one notch will produce a constant high pitched tone (the only remedy is to work at 100% brighness!)

Do I have a defective unit? 

What are my options in terms of getting it replaced?  I don't want it repaired.

Has anyone experienced something similar?  What did you do?

Please help.  I'm so saddened by this as the machine itself looks gorgeous.