In Windows 8 there are two areas where settings can be changed - firstly the Control Panel as per previous versions of Windows - but also a new PC Settings page which is part of the new redesigned interface
Control Panel
The Control Panel can be accessed in several ways:-
1.Move your mouse to the top right or bottom right corner (or swipe in from the right on a tablet) to display the Charms Bar, then click Settings and then Control Panel
2.In Desktop mode open File Explorer, click on Computer in the left hand pane and then choose Open Control Panel in the ribbon at the top
3.Right mouse click on the start screen icon, and choose Control Panel from the menu that appears
PC Settings
To access the PC Settings screen - Move your mouse to the top right or bottom right corner (or swipe in from the right on a tablet) to display the Charms Bar, then click Settings and then Change PC Settings