I'm having an issue with Skyrim that I can't seem to figure out. When I opened up the game today, my cursor was invisible on the world screen. When I go to the menus, it's there, both the main menu and the save menu, but not on the main screen. Navigation is near impossible; my horse goes in circles and it's very difficult to target anything. All of the other controls seem to work fine, and it doesn't appear to be the double cursor glitch; my Windows cursor isn't there, the game cursor has just vanished. What's causing this?

Your not suppose to have a curser on the world screen. just cross hairs. you use the w,a,s,d buttons to move and use the mouse to face the direction of where you want to go. There has never been a mouse cursor unless a menu or dialog window is up.