Hi, I have my Toshiba laptop hooked up to my Onyko receiver via HDMI and, up until recently, the sound was coming through fine when playing music. For some reason, no sound now comes through. The HDMI port on my laptop seems to be functioning fine as content plays through the TV when connected. The receiver appears to be functioning as I'm playing music through it via Bluetooth from my iPhone. I'm at a dead end. Please help!