Since the touchpad and touchscreen work elsewhere, then it likely is the Windows Update that caused this. With the release of any major Windows update there is always a possibility of drivers malfunctioning but these issues should be resolved with the regular following updates. The link below does mention Elan touchpad drivers specifically but this would apply to any driver.
Here is another link that tells you how to roll back from a Windows update if it causes problems:
http://www.howtogeek.com/235474/how-to-roll-back-builds-and-uninstall-updates-on-windows-10/
