I have a Toshiba 2065 CDS laptop. I hooked up a KDS 19 inch external monitor which works just fine. When I disconnected the 19 inch monitor, my 14 inch laptop monitor desktop displays the 19 inch screen. What do I need to do to get the laptop screenback to the 14 inch display? I went into harware profiles and removed all monitor drivers, rebooted and still the display is too large for the laptop screen.