(adsbygoogle = window.adsbygoogle || []).push({}); i am currently using 2 monitors fo my laptop and trying to get a third. i one monitor i hooked up via vga and works fine..when i try to add the second monitors via hdmi it only lets me use one of the monites....if you are familiar with multiple monitors on windows 7 you know you can right click on the desktop on click and go to screen resolution you see the extra monitors in there but it only lets me have 1 extra at a time but the 2 show up....any one know the problem?

Maybe , The HDMI cable is not connected

This might help
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no cause both the moniters show up in the screen resolution screen but i only allows me be able to use the 2 instead of the three i want but all three show up