10-30-2016 09:56 PM
I received my Thinkpad P40 Yoga roughly 6 months ago and have not had many issues, however, for the past few weeks I've noticed my fan at times pulses with a very annoying sound. At times when my fan runs, it sounds like it is pulsing. Sometimes it's constant, while other times it pulses and I'm not entirely sure why. I looked around and read a few posts stating that sometimes a BIOS update is required. I got software from the Lenovo website to automatically update it, but the sound remains. Any help would be greatly appreciated, thanks!