I'm not sure if I just now noticed this but today my laptop has been making a high pitched tone (it's broken up kinda like morse code?) coming from the speaker/fan area of the laptop. I don't think it's the speakers, since it continues when I mute them. It continues both on and off the charger but gets a little bit quieter off of it. I took a video of the noise here:
(you might need to turn up the volume or use headphones to hear it)
I'm using an i7 Lenovo Yoga laptop running windows 10 64 bit. it has my cintiq 22hd plugged into it as well. the laptop is about 2 years old.
Edited by spadesart, 18 June 2018 - 11:26 AM.