first, my laptop a Toshiba Qosmio X505 running Windows 7 Home Premium SP1 x64 stopped displaying it's extended display on any monitor, even duplicating the display did nothing. i tried reinstalling the driver, restarting with no success. then i tried uninstalling the driver, restarting, installing the driver, and restarting with no success. i know the T.V. and VGA cable are good because they work on another computer, so it has to be in the laptop. help! second one comes on my custom made desktop. it's running Windows 7 Ultimate SP1 x64 with a Radeon HD 5970 graphics card. i'm using a DisplayPort to HDMI adapter and the HDMI cable and T.V. work as i tested them with my cable box. the thing is, i don't know what's going on with the desktop because i got no way of seeing what's happening. :S thank you in advance for checking out my display troubles! ^^