New PowerBooks with preinstalled OS X: Brightness and Volume keys work correctly Steven Ferguson writes: "I just wanted to let you know that yesterday, I received a PowerBook G4 from Apple that came ...

For various reasons, keyboards on both laptops and desktops may suddenly stop functioning properly. This is not a common problem, but when it happens, either some or all keys stop working (depending ...

There are different ways to change the screen brightness, but the easiest way is to use the function keys. PCs of different brands have different function keys to control screen brightness. In this ...

When you use the volume controls on a Mac to increase or decrease the sound coming from your speakers, those levels increment in whole steps on a scale from 1 to 10: Press the Up Volume button once, ...

Has anyone else experienced this? The buttons themselves work, but when I hit the volume or brightness or contrast buttons, nothing happens. I've rebooted, and I'm running all the latest updates.