My Dell E172FPi monitor doesnt show when I try to extend to another display. My laptop is a Latitude E6410. How do I add this monitor?

SOURCE: Dell latitude d610 dark screen

there is a inverter in LCd that makes your lcd bright white shine. when it breaks down you see black screen. something happens on lcd you cant see clearly  you should go to service and need to be changed INVERTER.
pls rate

SOURCE: Dell Latitude d620 display problem

Sounds like your computer has just bit the dust, do your self a favor and purchase a new one. This time buy an XP, it might be a little bit more, but you get what you pay for. 
  `Nbryson

SOURCE: Connect Dell Latitude D600 to TV

try holding down the fn button and pressing at the same time the button with a small screen on it will do monitor switching

SOURCE: I have a new Dell

I'm assuming you are using some version of MS Windows.

I found this on the Dell support website;

• Click Start.
• In the Search box type main.cpl, click main.cpl in the list of programs.
• In Windows XP click Run, type main.cpl in the box next to Open, click OK.
• Click the Dell Touchpad tab.
• Click on the picture of the touchpad.
• Click Touchpad Settings.
• Make sure there is a check in the box to the left of TouchCheck, move the slider bar all the way to the right (this can always be adjusted back).
• Uncheck the box to the left of b>Tap to Click.
• Move the slider in the Touch Sensitivity area to the right until it is 3/4 of the way toward Heavy Touch.
• Click Apply, then click OK.
• Click the X in the upper-right corner to close the Dell Touchpad Utility.

Testimonial: "It worked. Thanks."

SOURCE: Unalbe to get Dell e6410

check physical connection and once connected tap press \and hold fn key and press on f8