One of the new things in Windows 8.1 Update 1 is the Power Button next to the User Profile picture on Start Screen. It shows up right there after I updated my desktop computer but is hidden after I did the same on my Surface tablet. It seems that the button will not appear if the machine is configured and recognized as a tablet, and will appear if it is set as a desktop or laptop.
So, is there a way to toggle it on and off when needed?
The answer is yes but it has to be done through a registry setting change.
First, open up Registry Editor and add a new registry key called Launcher under the following location:
And add a new DWORD (32-bit) value named as Launcher_ShowPowerButtonOnStartScreen under the new Key we just created.
Set this new value to 0, the new Power Button will be disabled on Start Screen. And to make the Power Button to show up, reset this value to 1.
Since it’s a user level of registry change, you will at least log off and log back in to have the new setting to take effect.