Windows 7: Dual Monitor Problem

ShandyBass · 25 Nov 2010

Ok so I am trying to change my current display so that I have dual screen but I have a problem. When I plug in my second screen it recognizes it is plugged it but wont connect. However if I remove the cable to my main display the computer then changes the display to the 2nd monitor. When I plug my main display back in it then converts back to my main display leaving the second black again.

My main display is connected via HDMI and my new display is a VGA 17" Starlogic LCD monitor the rest of my specs are in the spec box.

Any help would be much appreciated.

Kari · 25 Nov 2010

When both displays are plugged in, what option have you chosen in Screen Resolution settings?

Kari

ShandyBass · 25 Nov 2010

See when I printscreen it comes up, however it wont actually disply on the monitor so the computer is recognizing it just wont display both at the same time.

stormy13 · 25 Nov 2010

Quote:

My main display is connected via HDMI and my new display is a VGA

That is probably the problem right there. The card may have three connections but there is only two RAMDAC's on it,

RAMDAC - Wikipedia, the free encyclopedia

which only allows for 2 displays at a time. I think you will find that your card (and pretty much any card with 3 connections on it) is that one RAMDAC is for the DVI port and the other is for both the HDMI and VGA port, which would explain why the second monitor starts to work when you disconnect the HDMI port.

Try connecting your primary monitor to the DVI port, with the second to the VGA port and I'd bet both will work no problem

ShandyBass · 25 Nov 2010

Ok I will go shopping tomorrow and hopefully let you now then.
Thanks for all the help.

brianzion · 25 Nov 2010

my card i have dvi and vga and the two monitors work perfect also have a look at DisplayFusion Multiple Monitors Made Easy i suggest this to all duel monitor users because of the great software it is and what you can achieve the basic is free but the paid pro version is worth every penny in my opinion

your card is nice

Darryl Licht · 25 Nov 2010

Just a thought, what do you see when you use the Windows Key + P keyboard shortcut for Windows 7?

Also, since one display is connected via hdmi, do you have an alternative dvi connection and cable? If so, give that a shot and report your results!

ShandyBass · 26 Nov 2010

Ive tried win+p but nothing still, I havent had a chance to go out yet, as soon as I can ill try it. Also I tried putting the VGA cable on the VGA slot on the motherboard but that didnt work either. I don't know if that would help but?

ShandyBass · 26 Nov 2010

Also thjat DisplayFusion looks really nice I will have to look into that, again thanks for all the help!

brianzion · 26 Nov 2010

Try connecting your primary monitor to the DVI port, with the second to the VGA port and I'd bet both will work no problem

did you do this what stormy13 said?

Windows 7: Dual Monitor Problem

Dual Monitor Problem problems?