Help connecting an external monitor (Dell) to a laptop (Dell)

[Maheshvara]

So, today i got a Dell e190s monitor (courtesy of my father), and i've been trying to connect it to my Dell Latitude 3450. 

 

As far as i know, drivers aren't the problem, and monitor recognized that it's been plugged into a PC/laptop.

 

Monitor works, i'm currently using it on my Toshiba Satellite a500-13f, but it won't work on Dell. I'm thinking that the port in Dell is dead, but how do i check it really is  

 

P.S. This isn't a first monitor that didn't work on this (Dell) laptop. I also have some ind of AOE 22" FHD monitor that also wouldn't work on it....

[TheKDub]

Well, heres how to tell if the port is dead: Plug a known working monitor into it, right click your desktop, open the resolution settings panel, have it scan for new displays, if none show up, then the port is possibly dead, another thing to do is check the function keys to see if there is one for displays.

[Maheshvara]

Well, heres how to tell if the port is dead: Plug a known working monitor into it, right click your desktop, open the resolution settings panel, have it scan for new displays, if none show up, then the port is possibly dead, another thing to do is check the function keys to see if there is one for displays.

I actually did just that, but it wouldn't detect anything, and as far as Fn key goes, i think that Fn+F1 is for external monitor, and that does nothing...

[TheKDub]

I actually did just that, but it wouldn't detect anything, and as far as Fn key goes, i think that Fn+F1 is for external monitor, and that does nothing...

 

Well, I'd guess the port is dead then