1 Reply Latest reply: May 29, 2012 6:50 AM by RRFS
ms4wiesbaden Level 1 (0 points)

my imac is 6 month old.The integrated speakers are  silent and i can not find them in systems - sound.

After putting headphones in  and restarting the sound can be choosen in systems.

It works till the next start .

What s wrong ?


Thxx from germany.

iMac, Mac OS X (10.7.4)
  • RRFS Level 5 (4,490 points)

    Please try:





    • Shut down the computer.
    • Unplug the computer's power cord and ALL peripherals.
    • Wait 15 seconds.
    • Attach the computers power cable.
    • Wait another 5 seconds and press the power button to turn on the computer.





    • Shut down the computer.
    • Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    • Turn on the computer.
    • Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    • Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    • Release the keys.