I just installed a new keyboard and mouse. The keyboard works fine but the mouse is acting up. The computer recognizes it and the buttons and scroll wheel all work. When i try to move the cursor sometimes, it will start acting "shaky" and go to the top left of the screen on its own. I tried taking out the batteries and re-linking the mouse to the transmitter but it keeps doing the same thing. There is no interference, i am within my 3ft. radius of the transmitter, and it still does this. Can someone please help?