Hello Satn,
Please note that there is a specific configuration that is required to comply in order to have three displays.
Active Display 1 | Active Display 2 | Active Display 3 |
DisplayPort* | DisplayPort | HDMI* or DVI or VGA or DisplayPort or Built-in Display |
DisplayPort or HDMI or DVI or VGA | DisplayPort or HDMI or DVI or VGA | Built-in Display3 |
DisplayPort or HDMI or DVI or VGA or Built-in Display | DisplayPort or HDMI or DVI or VGA | Intel® Wireless Display (Intel® WiDi) |
You can check for more information about this configuration at the following link:
http://www.intel.com/support/graphics/sb/CS-033714.htm
I also recommend you installing the latest graphics driver available from our side at the link: