DELL XPS Coil Whine High Pitched Noise
System Nominal
Coil whine is the result of electromagnetic coils vibrating as electricity passes through them, a phenomenon known as magnetostriction or Lorentz force vibration. In modern high-performance laptops like the XPS, the high power density requires rapid switching frequencies that can occasionally fall within the human audible range; while annoying, it does not represent a mechanical failure or a risk to the longevity of the electronics.
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