Cyclonewind,
I would love to help you with the issue you are having, but first let me ask you a few questions.
1.) What is the product name and/or number on the product you are calling about?
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=bpy21016
2.) What is the operating system you are working on?
3.) Is the unit plugged into the wall directly or into a surge protector?