I have a sony vaio running vista buisness.Been ok till yesterday when the mouse and pointer pad have become erratic.The pointer doesnt keep still and wanders all around the screen.I have deleted the mouse driver in device manager , but on reboot the problem persists.Any help would be much appreciated.I have also tryed several mice and they all act the same.
Normally it might indicate dust or a foreign body problem, could even be a low battery problem, if using a wireless mouse. But having stated that you get the same results from trying several mice, I am rather stumped?.
If so, then he touchpad could be faulty. Also you say you have deleted the drivers (for the touchpad ?). If so Windows will load a generic one that omits many options. The correct driver (such as synaptics etc) often have a sensitivity setting although from the sound of it I suspect a hardware issue.