[Variol (Farseer) Elmwood]

Kill the Demon child and rid thyneself of the curse! And if that doesn't work.. is it just a standard keyboard or was it an upgraded one that may have drivers for it? If so, try reinstalling the drive. If not, go into your keyboard setting in your control panel and see if there is anything unusual set there.
Opening the keyboard may not reveal much, bur it couldn't hurt either, just to make sure nothing's jammed. Other than that "dear Sam" see if there's "help" in windows on it to see keyboard functions can be changed by a combination of buttons.