Last time I did a Thinkvantage update all kinds of things started screwing up. sometimes I have no sound. Sometimes (like now) I'll have NO keyboard function after a boot-up, then it will mysteriously start working again, sometimes after a day or two. I can use an external keyboard, but what a pain. I thnk there might be a hotkey I don't know about, and I accidently toggle it, but that's just a guess. Your thoughts?