Switching out of S Mode

First you need to check if Windows is in S Mode. You can do this by:

Selecting the Start button, then select Settings > System > About. Under 'Windows Specifications' it will show you what version of windows your device is using. 

If your device is in S Mode and you wish to switch out, simply follow the instructions from the following link:

Switching out of S mode in Windows

Please note that switching out of S mode is one-way. If you make the switch, you won't be able to go back to Windows in S mode. There's no charge to switch out of S mode.