Hi!!! Assuming you know your connections, have you tried going to display videocard properties. There should be options to connect laptop to t.v..Enable it from the video card. Enable T.V.-out in software, probably "FN Keys" to switch video out-put LCD T.V. "PC IN" may not be the one, there may be another "A/V" or component "IN" , if you are using RGB component connectors. Does that make any sense ? There are a set of keys on every laptop to enable T.V. Out, Picture on FX Keys (Usually F5) You can press FN and F5 to enable T.V. Out. If that does not work you may need to update your graphics card drivers. Sincerely, Celestra