A client purchased a sweet Lenovo Yoga 3 off us just before Christmas, but is now saying that the sound doesn't work.
I know that the sound worked originally and have determined that the problem has occurred (and is consistent) since they plugged in a set of Microsoft USB headphones (I don't have the exact model, but I can probably find out).
While onsite with them last week, I uninstalled the Realtek (and other) devices in Device Manager, then had Microsoft find the devices and reinstall again. This didn't change the situation. I then uninstalled them in the same manner, but went to the Lenovo site and installed the latest Realtek driver. On successful installation, I restarted the PC, but no change was seen to the sound.
Unless I missed something, there doesn't seem to be any software that I can find in the program list which I can uninstall to remove the Microsoft USB headphone setup.
I didn't have any 3.5" jack headphones at the time to test the headphone jack, so can't comment on whether or not sound could still be heard via that means.
I expect the resolution isn't all that involved, but I'm currently stumped.
Await your brilliant resolution...