Greetings, I have recently brought an Acer Aspire E 15 E5-575G-53VG from Amazon. I have noticed a fairly high pitch coil whine from the upper part of the trackpad. The whine is especialy noticble when the charger is unpluged or when the trackpad is touched. The coil whine is loudest the laptop is unpluged AND touchpad is touched.
I believe that I have the Synaptics touchpad but cannot comfirm, as device manager lists the touch pad as HID-compliant mouse.
As for Windows, I have fresh install windows 10 and applied the anniversary update.