Today my laptop has been beeping at my like crazy. Maybe a couple minutes between very loud, piercing beeps, but consistently beeping all day. It's an HP G60-445DX Notebook PC. I've scanned, turned it off, removed the power cord, removed the battery, drained any phantom energy by pusing the power button while unplugged with battery out. I updated Java. I started and restarted. It even makes the noise when it's turned off. Battery is 100% charged and the computer is not hot. What gives?