New computer, worked perfectly. I accidentally hit Fn and something else. Now my laptop display goes blank whenever connected to an external monitor (and so does the external monitor). Comptuer is on, but without display. If disconnected, my display returns on the laptop. I'm so sure this is a settings function i turned on, that needs to be turned off. But i've tried everything. Please Help!!! Also, not sure if this is a coincidence - but my laptop can't identify any local wifi connections as well. Which is absurd.

Computers & Internet - Lenovo - G470 Core I5-2410m 2.9ghz 4gb 500gb Bt Cam Hdmi Esata 14"hd...