The pointing stick in the middle of keyboard started to act erratically and it will keep on going to the right hand of the screen no matter how much you dragged the mouse pointer back to where you wanted it to stay. Until you can replace the actual hardware of the pointing stick, you can easily disable it via default driver i.e. Synaptics Pointing Device.
To disable pointing stick in the middle of keyboard keys G, H and B, double-click “Synaptics Pointing Device” icon in the taskbar.
Next, click the “TouchStyk” tab and then click “Disable” button.