I hava an HP A320N with an AMD 2800+ processor and 512 mg of Ram. When you turn it on the blue light around the buttton liights, the keyboard lisghts flash for a moment and the fans turn for a couple seconds. The the fans shutdown and there is not even a post beep. The blue light around the buttton stays lit. I changed processors, and power supplies but still the same results. I disconnected all the drives and still th same thing...not even a beep. Any idea?