I have a Toshiba P200-17C, the screen on which does not fully display. The top one third is viewable, the middle third will usually show a black area unless I squeeze the screen, in which case, you can see a 'ghost image' underneath, but when going from the top third to the middle third, even in 'ghost mode', you cannot see the mouse pointer. The bottom third is entirely black. I have tried to reinstall the driver, so can now only assume that the screen itself or some sort of connector is broken. What is the best way of fixing this?