Coil Whine issues on Acer Predator Helios Neo 16 (PHN16-72) — Any BIOS Fix?

While coil whine on the Acer Predator Helios Neo 16 is a common issue and not necessarily a sign of a faulty device, here's a breakdown of potential causes and solutions:
Understanding Coil Whine:-

Coil whine is a high-pitched noise, often a whine or hum, that can occur when electrical components, like power coils, are under heavy load.
Why it happens:
It's a result of the physical vibrations of the components as they handle high frequencies and currents.
Is it a problem?
Coil whine itself doesn't usually indicate a performance issue or a defect, but it can be annoying.

Potential Causes and Solutions:
Power Supply:
Problem: The noise might originate from the power supply unit (PSU) or the laptop's internal power components.
Solution:
Try a different power adapter: If you have another power adapter, test it to see if the noise persists.
Reverse AC plug polarity: If your AC plug has a 2-pin design, try reversing the polarity (if possible).
Use the original power adapter: Avoid using USB-C chargers when playing games, and stick with the original brick power adapter.
Fan Noise:
Problem: The noise could be coming from the fans or the heat pipes/liquid metal cooling system.

Solution: Reduce fan speed: Use software like RivaTuner or MSI Afterburner (or equivalent) to control fan speeds.
Check fan bearings: If the noise sounds like a rattling or grinding, the fan bearings might be failing.
Consider a cooling pad: A cooling pad can help keep the laptop cooler and potentially reduce fan noise.
Laptop Usage:
Problem: The noise might be more noticeable during high-demand tasks like gaming or video editing.
Solution:
Use headphones or speakers: Mask the noise with audio.
Adjust power plan: Use a balanced power plan instead of a maximum performance plan.
Undervolt: If your laptop allows, consider undervolting the CPU or GPU to reduce power draw and potentially lower temperatures and noise.
Contact Acer Support:
If the noise is excessive or causing concern: Contact Acer support for further assistance.

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