Please bear in mind that this product has reached its End of Interactive Support so Intel no longer provides interactive support for this product via telephone, chat or e-mail. Furthermore, the issue might be caused by the type of converter/adapter that is being used.
You may try adjusting the resolution of the system, or trying to set a custom resolution as 1184x666. Also update the system BIOS and video drivers installed. Also use the latest driver for that monitor you have installed.
You can also try by checking in the setup menu for your TV. Check the scaling options setting for the input connected to your system. Some displays have an internal setting to disable over scan.
If the issue persists, you may need to test using a direct connection and make sure with your laptop manufacturer, that 1080/720 is fully supported for your system.