I spent couple days on this issue. It is the motherboard RCA/S-Video output of the JETWAY motherboard that is casuing this 1" border. The CN700 S3 UniChrome Pro integrated graphics is just too primitive to be out on the market even it does have some TV screen adjustment option. My screen itself doesn't do adjustment. I tried ATI and Nvidia. Nvidia is the best, it does everything I need to run a VGA and a TV screen IN FULL SCREEN.
Now I am on my mission to add a NVIDIA PCI video card but my voom2 enclosure doesn't allow and I bought a Morex 3777 case but then the M2-ATX shutdown controller doesn't fit without some modification on the case. Then the PCI card is too long to fit in a Morex 3777 case. Oh man, this is getting interesting.
Do you have any problem getting a full screen on a TV (or RCA / SVideo) from the S3 on board TV out port? I believe most mini-ITX boards are using S3.)
Or it is just me with a bad board?