Problem with built-in speaker.

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Level 1

4 points

Problem with built-in speaker.

OK, here's the deal. I bought this macbook air from the US and I'm in Europe. So I was listening to some music on speakers through the jack input. Then something's got frozen for a sec, but I was holding the power on/off button. After turning back on my macbook air, there was no sound with internal or external speakers. I checked if the red light was on, but it was not. I check if internal speakers are among sound devices, but they are not! So I tried the thing with command+option+p+r immediately after turning the mac on, but there is some grey locker and it wants some kind of password. I tried as many passwords I could think of, but none of them worked. Please, I really need help.

Any ideas? thanks.

MacBook Air, OS X Yosemite (10.10.1)

Posted on Jan 19, 2015 9:33 AM

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Answer 1

AppleJoe

Community Manager

Jan 20, 2015 10:56 AM in response to _kascak

Hello _kascak,

Welcome to the Apple Support Communities!

I understand that after trying to reset your NVRAM, your Mac is booting to a gray screen with a lock. This sounds like there is a firmware password set. Please use the attached article as a reference for troubleshooting this situation.

What is a firmware password and how do I set one up? - Apple Support

What happens once I've set up a firmware password and how do I unlock my Mac?

If you used OS X to set up a firmware password on your Mac, trying to start up to any device other that the internal drive will stop at a gray lock screen.

Click the in blank password field and enter your firmware password, then press Enter to unlock your Mac.

If you used Find My Mac to lock your Mac, you'll see a gray screen that has four to six blank fields and the message “Enter your system lock PIN code to unlock this Mac.” You'll see this screen as soon as your Mac receives the lock instruction from iCloud.

Enter the six digit code you used to lock your Mac in order to unlock it.

What if I forgot my firmware password?

See Recovering a lost firmware password for more information.

Best regards,

Joe

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