Hello my laptop is a Sony Vaio. Sorry I don't know the model number, but the point is that my laptop has a Volume button, but when I press it nothing happens. Only the Power Button responds to when I press it -_- I don't know if I disabled it or what I just want it working again. The same goes for the cd drive. There is a button to press, but it doesn't work the only time is works is when I press the rectangular button for a bout 5 seconds. Can someone help me out here thanks.