HI, am having a Toshiba Qosmio X305-Q701 laptop with Vista which i have upgraded to Windows 7 couple of weeks ago. It was working fine in all matters but from last few days am facing some annoying problem when i attach HDMI cable to the same. Whenever i plug the cable, the screen just goes black and does nothing. After i unplug the cable, the screen turns to normal but gets freezed and dont allows me to do anything unless its reboot. Could you guys please help me out in fixing the same ? Please suggest something.