I did as instructed. When I hold the keys down, a white screen flashes briefly, I hear the CD/DVD re-configure (like on a normal power-up) but then back to black screen. This repeats every 5-8 seconds, there is no chime. So, essentially, when holding the command-option-p-r keys, it doesn't really restart. Once I release the keys, it does then restart as normal to desktop screen...but still no start-up chime or volume.
Re-checked system preferences, still appears normal. Volume buttons on keyboard work, in that the icon shows on screen, but no sound.
NAME: internal speakers TYPE: built-in
There is only the one option under Output
The sound issue started 2 evenings ago...seemingly out of nowhere. Left for work and everything was fine. Returned home, and BOOM:(
So no, I installed Mavericks just this morning, hoping it would fix the audio problem. I re-installed and updated my older OS, Lion, yesterday, hoping it would fix the prob. Nothing. Before Mavericks, I even tried a "Lion Audio Fix" app I found online, that didn't help either.
I tried to "Kill the Core Audio" through Activity monitor, but I will try again...
No luck Chuck. (or Mike;)
Would it help if I installed an older version of an operating system? I suppose not, if you think it's a hardware failure.
Have you ever heard of a hardware failure like this on a $1,400 computer that is less than 2 years old? I am livid!
Thanks for your help Mike. I'll haul it down to the Apple Store.