Follow the troubleshooting guide here
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bph07107
From a Googled Site:
1 long Beep: Memory problem
Something is wrong with the memory installed. Check out the troubleshooting memory problems FAQ for details. Note that there could also be something wrong with just accessing the memory (ie the motherboard has a problem).
So have you reseated the ram?
If you have two sticks, remove one and test, then test the other one. RAM must always be in the primary slot.
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bph07107
From a Googled Site:
1 long Beep: Memory problem
Something is wrong with the memory installed. Check out the troubleshooting memory problems FAQ for details. Note that there could also be something wrong with just accessing the memory (ie the motherboard has a problem).
So have you reseated the ram?
If you have two sticks, remove one and test, then test the other one. RAM must always be in the primary slot.