Hi everyone please please help me, my hp desktop is giving me 3 beeps when I turn it on. The fan is not turning on either when I start it, nothing works just 3 short beeps pause 3 short beeps. I have tried new memory in every slot, 1 at a time, I have tried new hard drive, nothing seems to work. So I'm really hoping some one out there can, thanks in advance

Three beeps can be memory related, but the computer model needs to be known to determine the code meaning conclusively.

More info:
HP and Compaq Desktop PCs - BIOS Beep Codes (http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bph07107)