First AVG is a Anti-Virus program. So is the Socket on the Laptop VGA. If it is I am not sure if it will work connecting it to HDMI. Does your TV have a VGA socket like the Laptop? Plus using VGA limits you to watching DVD etc its no good as a Monitor For your Laptop, as Text would be rubbish to read.
On the other Hand If your Laptop as a DVI connection you can get a DVI to HDMI that will work like a monitor.
Having said all that, have you tried pressing fn key and on my Laptop f4 for external monitor