Help HDMI icon is gone from laptop

Nanouzz Posts 1 Registration date Sunday March 24, 2013 Status Member Last seen March 24, 2013 - Mar 24, 2013 at 11:45 PM

I usually hook up my laptop to my tv with HDMI cord but after my son used it i went to hook it back up to my tv but the HDMI icon is gone so i see the image to my tv but not the sound ...yes i have tried the control panel<sound<playback> but thats where the icon is missing what do i do?