OK, here is how this got resolved for me on my PC only (not touch screen).
uninstalled Zone Alarm (currently this is not compatible with Windows 8.1)
restart PC
Press Windows key + R
Type: WSreset.exe (enter)
then refreshed my PC by pressing Windows key + C
go to Settings
Change PC Settings (at bottom right)
in General
Refresh your PC without affecting your files (for some this could be in Update and Recovery, then goto recovery)
click on Get Started, follow screen instructions to refresh your PC
restart PC
Go to windows stores and start update for 8.1 or go to Microsoft website and start downloading windows 8.1
Hope this method works for you.
Good Luck :-)