Windows 8.1, No Touch Screen ... either the mouse/touchpad makes the Charms appear - almost random.
Tried to turn off via Control Panel, Mouse. At the Mouse window, it displays options for Button, Pointer, Pointer Options, and Hardware.
Nowhere are there any options to turn off edge swipes or in any way to control the appearance of the Charms.
Under Hardare, it says Devices: HID-compliant mouse, Manufacturer: Microsoft Driver provided by Microsoft