No sound on hdtv when hook up to hdmi

Hi buddy u have to change ur sound setting from the Control panel.
ie by default the Sound is played through ur default sound card.but if ur using ur HDMI connection then u have to chage it frm control panel

Steps:Control panel>Sound N Audio Device>Click on the Audio TAB(the Third on frm the top_)>there u will find an option Sound played back and u will have Drop down option once u have connected the HDMI.afer u have selected the option click on apply>ok.then U will definatly get Sound frm ur TV.

Try this. hook up the cable, right click on your speaker icon at bottom right of screen, select audio devices, select the digital audio option, then restart your machine. Then you should be good. May have to do the opposite to get computer speakers working once you are done with the TV hook up.