Its possible that its normal. I have an MX300. While windows is loading, each driver is loaded up one by one. When it comes to my soundcard driver, it checks for the soundcard, and if its there, initilizes it. Depending on how loud your speakers are set, you might actually be able to hear your soundcard "turning on". For me, it sounds like a small POP comming out of my speakers. I've never heard a Live! before, but i'm assuming thats what your hearing. As long as it doesn't last very long, and you don't hear it anywhere else, your fine.