If you have tried to connect your PC to your HDTV via HDMI cable before, you will most likely have experienced problems like overscan, desktop off screen, extreme high bright/contrast pictures, and the wording font is just unreadable. I have been struggling trying to find a solution, thinking that there must be a way to overcome this problem instead of just connect through the D-Sub cable.
So after been checking the net and playing with the TV menu, I realised that it's just a pretty simple setting...DUH! Perhaps TV manufacturers should put it down on the printed menu. Anyway, since I'm using Samsung LCD and Plasma TV, and NVIDIA GPU, so I'm not sure about other brands TV but I guess the menu should be more or less the same.
At the back of the TV (LCD and Plasma), you will find a HDMI port (either HDMI 1 or HDMI 2) labelled as DVI. Connect your PC to this port using either DVI-HDMI or HDMI-HDMI cable. Then, go to the TV menu, and go to Edit Name under Input menu. From there, you choose either PC or DVI PC depends on what is showed on the TV menu. Now go to change the screen resolution or screen size from your PC or the GPU setting menu...and VOILA! Everything is now crystal sharp like a real PC monitor! As simple as that. Now not only we can watching movies, we can also surf the Internet without having to torture our eyes.