I am only getting about 2/3 of the image on my tv when I use the s-video. The card is an ATI X300. When I first switch to the tv out I can move the mouse around the screen and see the different parts but when I play a video in Media Center it is just the top-left right most parts that I can see. Any suggestions?
right click on desktop.
NVIDA setting.
Advanced Settings button.
under display, set up multiple displays.
Select Tv and there you go it should work from there.
Also sometimes you need to hook up the cable before you turn the devices.
I hade the same problem as you and thats how i ended up fixing it.
Hope that helps.
S-Video sucks…the quality is deplorable