To uninstall/reinstall the video driver in Vista do this:
Click START, type "device manager", when dev. manager appears in the menu, click on it to open it... When it displays your list of hardware, click on the "+" sign next to "display adapters", right click on the item in the submenu, click "uninstall" and restart the computer. NOTE: if there is more than one item in the submenu, please tell me........Upon restarting, Windows will reload the driver for you. Try browsing again and see if the problem is corrected. If not, repeat the steps I just said, except do not click on "uninstall", click on "update"... and let Windows go out on the Internet to look for an updated driver for your video..
Also, you gave me the make/model of your TV
I need the make/model of the computer that the TV is attached to.... And if you have added a video card to the computer since you bought it, I'll need the make/model of that too...