I don't have any volume. When I push the mute button or try to increase the volume up or down nothing happens. The volume shows up as if it were at full volume but no sound. I am so frustrated.
I need some help with the volume on my macbook pro. I am getting absolutely no sound no matter if I push the volume increase or decrease button. Nothing changes. The volume bar shows up as if it were at full volume but no sound and the mute button doesn't do anything either.
Please help.
Go step by step and test.
1. System Preference > Sound > Output > Internal Speakers
Highlight Internal Speakers.
Make sure that Mute is not enabled.
2.Plug in and remove the headphone.
If you see red light in the headphone port or not, plug the headphone
in and out of the port 5 or 6 times to flip the microswitch inside.
Sound output may be stuck in the digital mode.
Try this even if you don’t see the red light.
3. Reset PRAM. http://support.apple.com/kb/PH14222
4. Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
5. Applications > Utilities > Audio MIDI Setup
Audio Devices window
Side Bar
Click the Built-in Output.
Under Mute any of the boxes checked? If so,uncheck it.
6. System Preferences > Sound> Sound Effects
Play sound effects through:
Select "Internal speakers" and then back to "Selected sound output device".
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