I have a brand new laptop (Inspiron 16) that I'm trying to hook up to an old monitor (Dell E1910.) I can get both displays to show at 1440 x 900, and it looks good. But I want to set to just display on the E1910 and turn off the laptop screen. However, when I set it to just display on the E1910, the resolution flips back to the native laptop resolution which is 1920 x 1200. It locks into this resolution (resolution option greyed out) until I duplicate the displays again, at which point I can pick whatever resolution I want, and both screens cooperate. I tried updating the driver and downloading driver directly from intel, but this didn't improve situation. Thanks for any help.