Yes. If your graphics card has an HDMI port, you can connect via HDMI from your graphics card to your LED TV. My second monitor is an LED TV that I have connected this way myself as well.
Yes. If your graphics card has an HDMI port, you can connect via HDMI from your graphics card to your LED TV. My second monitor is an LED TV that I have connected this way myself as well.
Is the tv your only monitor, or do you have another one and the tv is a second screen? If so, connect the monitor to the card as well, not to the onboard.