Okay, I'm having trouble with the keyboard on my Quadra 610. A few months ago the Quadra stop keeping the correct time when I turned it on. I assume that some battery has died but I don't know where its at. Anyway, when I hit a key, I get pop/beep sound and I have to hold the key down for a few seconds to get it to work. The mouse that is connected to the keyboard works just fine. Is the keyboard dying?