A:Answer I was able to fix my fan noise by doing what it said on this site. In that link towards the top click on "Solved! see the solution" and it will take you to the main comment.
Basically update BIOS, go into BIOS and choose "Quiet Mode" (this don't effect processing speeds), AND update WLAN driver.
https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/Yoga-910-crazy-loud-fan-even-when-CPU-at-lt-35/m-p/3552229#M47982
BIOS v.35 can be downloaded here: http://support.lenovo.com/us/en/downloads/DS119202
latest WLAN driver, v. 12.0.0.278. It can be downloaded here: http://support.lenovo.com/us/en/downloads/DS119197