That would be my bet on what has happened.
First reboot, then try two or three different audio applications (VLC, WMP, iTunes, etc.) just to get a baseline. Also test the audio driver settings in windows itself. Usually there's a 'test' mode.
Double check the digital sound input modes on the Onkyo too. Every once and awhile I have to adjust this if someone in the house bumps the audio mode buttons on my older DS595. YMMV.
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!