No sound - no sound devices found, but speakers are working,
I've recently got a MacBook Pro up and running (got it from a friend who had spilt coffee in it). I fixed it by replacing the keyboard. But there's still no sound on it, and there has never been since I got it. If I go look in the System Preferences there are no devices to be found.
I thought the speakers were broken, so to be sure I connected them to another MacBook, and they worked! So now I can't figure out what the problem can be.
Can anyone help me with this?
Oh, and when I try the volume controllers on the keyboard, I just get this: http://i.imgur.com/tl53A.png
Is this a good question?