I am trying to attach a third monitor to my PC, however I am coming across a rather strange issue. Windows screen resolution is still only showing that I have two monitors connected, but the second has been extended over both the second and third monitors. Basically, it shows as the main display being a normal size, and the secondary as being twice as long as normal. I have my main connected via a the display port, and the second and third are using two of the three mini HDMI ports my video card provides. How do I get windows to accept my third monitor the same as it does my second?