Hello, my computer starts a continuous beep when Win Xp loads. Not on power up, but after you get the Win splash screen. It will continue to beep until I select shutdown and then it stops. The computer shuts down normally without the beep. This computer has worked good for about 2 years. I have cleaned all the fans and they seem to be working good. I have also replaced the keyboard, reseated boards. This is an Intel MB. Thanks...BC