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My macbook this without sound. I checked the settings, and has no input or output and sound. An icon appears blocking the sound. what to do??

Please,can someone help me find the input devices and left the sound?

MacBook, Mac OS X (10.6.8)

Posted on Feb 7, 2013 6:33 PM

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23 replies

Feb 7, 2013 6:56 PM in response to Luisek

I'm on my iPad right now so if something I say doesn't look quite the way it does on your Mac forgive me. Go into your Sound preference pane and click the Input tab. Make sure that built in mic is selected and mute is not checked. There should be a slider control on the screen, slide it all the way down and then all the way up, and finally slide it back to about a quarter of the way up. See if you sound works now.

Feb 7, 2013 7:24 PM in response to Luisek

Try resetting the SMC and pram


MacBook and MacBook Pro

Laptops with a battery you can remove

Shut down the computer.

Disconnect the MagSafe power adapter from the computer, if it's connected.

Remove the battery.

Press and hold the power button for 5 seconds.

Release the power button.

Reconnect the battery and MagSafe power adapter.

Press the power button to turn on the computer.


Newer Mac portables with a battery you don't remove

Shut down the computer.

Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.

On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.

Release all the keys and the power button at the same time.

Press the power button to turn on the computer.

Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.


Resetting NVRAM / PRAM

Shut down your Mac.

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 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.

My macbook this without sound. I checked the settings, and has no input or output and sound. An icon appears blocking the sound. what to do??

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