Agree with gmkos,
You want help... but you don't do much to help us... help you, lol! Please provide more information.
Are you using an integrated or discrete graphics card? What interface are you using to connect to the TV? HDMI? VGA? Did you try with a different cable? Did you make sure the TV was set to the right input?
You also didn't say if the computer ever worked at all? Were you able to get a display ever before? Do you have another monitor to test it? It could be set to a resolution unsupported by your TV, so you could use another monitor to change the resolution.