Issue with display, PC -> HDTV; VGA vs HDMI

[DesiPower]

I have a Sony 47" HDTV hooked up to my PC through a VGA cable. I wanted to connect it through HDMI in the hope of getting better picture quality. The PC had a 7900GT and used a DVI to HDMI adapter, the picture quality got worse and obviously there was no audio over HDMI so I abandoned the idea, didn't try anything else and switched back to VGA.
Recent I found a HD 4350 at shell shocker, immediately jumped on it. Now I have audio over HDMI BUT the quality of picture is equally crappy. I tried all different setting in the Catalyst control center (which I really really hate btw) but it didn't get any better. I also tried the TV's settings.

The picture looks too bright like at high contrast, too bright color, sharpness is awful, text have ghosts, netflix is bad too, you can even see waves of shades on the windows start up screen where its goes from light to dark blue from one end of screen to the other... like as if its 16-bit color.

Anybody else had this problem? any idea whats causing it? how to fix it? I tried 4 different HDMI cables, none of them were like $50 ones but 2 of them are of pretty good quality. All of them had exact same picture quality including the $1.99 ebay one... so I guessing its not the cable...

 

[cusideabelincoln]

The TV might have an HDMI port specifically for computers. Have you tried switching HDMI ports on the TV? What settings in the TV did you change? There has to be a setting in the TV for "PC Mode" or similar.

Also make sure you are running at the native resolution of the TV. Consult your manual; they'll probably call it something like "PC resolution."

What is the model of the TV?

 

[DesiPower]

Very good suggestions, I didn't think of that... there is one right next to the VGA port, I will try that. I will also look for the PC settings in the TV, I recall seeing something somewhere in its complicated menu... I did try the native res but that was no good

The model is KDL-46W3000

 

[DesiPower]

Its resolved now, there was a setting in the TV called Game/Text mode or something like that, you can set each port individually to that mode. the PC (VGA) port was set to that mode. I set the HDMI port that I was connectin to, to that mode and now everything is perfect!