Ok I have a Saitek GM-3200 laser mouse. I use it on a Fujitsu Siemens laptop with runs Vista basic edition. This mouse used to work on this laptop, but all of a sudden when I plus the USB in any port the mouse cursor just seems to travel to the top left of the screen. I can't move the cursor with the Saitek mouse, but I can move the cursor with the laptops touchpad. Even then, it still moves back to the top left of the screen.

Computers & Internet - Saitek - GM3200 Mouse