I use a small convertible laptop (the screen rotates through 360o to turn into a tablet) for a lot of web browsing; occasionally I convert it into a tablet and switch allow the screen to rotate from landscape to portrait mode. However, when I tried to do this by switching off the Rotation Lock option the other day, the option in the action centre was missing; it is usually between Tablet Mode and Network:
While doing some research I cam across a question on the Microsoft Community with an answer which resolved mt problem.
The one which worked for me was changing the registry entry in
Double click the
Sensor Present item and change the Value data to
Once I restarted the machine, the option was back in the action centre: