Let's try simple. I don't see where you changed inputs or sources on your TV and since it's the VGA connection on your laptop tell me which Fn+what key you used to enable that.
I recently purchased a VGA to component cable to connect my laptop to my HDTV. After connecting, I tried adjusting the resolution and toggled between view modes, but I can't get anything to show up on the TV. I have an Inspiron 1720 laptop. Anyone have any ideas as to why there is no picture on the TV? Thanks.