No sound
For no reason I can think of, my pb 17 has stopped playing any sound. When I go into System Preference / sound / output, I get a "No output devices found", and the output volume has mute selected and it is greyed out so I can not change it. Trying to use the keyboard sound keys does not work. No built in speakers, or if I plug in external speakers or headphones, are found so they can not be choosen as an output device. The System Profiler does show hte speakers. When I restart the machine I get the start up tone, so I know the built in speakers are not bad. Any ideas?
pb17 1.67GHz w/ 2GB running 10.4.5
reg
pb17 1.67GHz w/ 2GB running 10.4.5
reg
Comments
Course, reinstalling OSX would probably fix this too, but that's not an attractive prospect.
Good luck.
Try zapping the PRAM. If that doesn't work, try resetting the NVRAM
zapping PRAM - boot holding down command-option-P-R until it chimes twice
resetting NVRAM:
boot holding down command-option-O-F until you get a prompt
enter the following 2 commands and hit return after each:
reset-nvram
reset-all
It will reboot.
reg