Hiya all. I've had my macbook for about a year and a half now and loved it very much throughout my time owning it. It has proved to be a very reliable machine. However, it has recently started some worrisome things. Whenever I open it, the speakers make a strange sound while starting up, like someone tapping on a microphone. This happens every single time, and it's the exact same duration and volume. Could my speakers be failing, or is this nothing to worry about? Also, I've noticed a rather annoying white noise sounds whenever I used the trackpad. After not using the trackpad for about fifteen seconds it abruptly goes away. Anyone know what this could be and any possible fixes? Thanks for everything!