I have just finished a Celron 300, using a Intel motherboard mu 440 ex. All works well except the hard disk led. It will burn all the time or not at all but does not blink to show activity of the hard disk. Does anyone have a clue as to what is the cause of this? James Prettyman [log in to unmask] Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com