My sister is using XP Pro on her computer. She was scrolling on a web page and the mouse cursor/arrow just vanished from eyesite. She hit the old reset button and when the computer rebooted the cursor was just sitting smack dab in the center of the monitor screen and would not move. I tried hooking up and old mouse I had laying around and the curser still just sits in the middle of the screen. Any ideas will be greatly appreciated.....