A few months ago my laptop screen went black in the middle of a movie. Now it is visible during boot sequence, but stays black after that. I hooked up an external monitor and all was working well until the other day when I clicked the Extended Desktop option in the Graphics Properties section. Now my external monitor is black too. I can see my mouse pointer, but Ctrl+Alt+Del doesn’t work, right-click doesn’t work (it just beeps). I’ve tried restarting and going to safe mode, but it won’t do that either. I need my display back. What can I do to enable my external monitor again and disable the extended desktop display option?
P.S. : I’m running Windows XP.
