Macbook Pro has the "keyboard illumination keys" F5 and F6. For some reason, there is a small "no entry" sign whenever I hit those keys. The keyboard's illumination doesn't seem to change at all, ...
I recently sent my Macbook Pro (late 2008 model) to get a replaced logic board and top cover. When I got it back the Special function keys are mixed up. F3 - mutes sound - it should do expose f4 - ...