hi my steP son droPPed my my laPtoP breaking the screen so have been using an external monitor for a while, i have just brought a new lcd and fitted it but no disPlay is on the screen, I distinctly remeber choosing to only show the screen on the extrnal monitor only but have no idea how to revert to using the laPtoP screen any advice would be much aPPreciated oh and yes my P is broken have to coPy and Paste one from somewhere every time i turn it on.