Do you want to understand the beep code, see about adding more memory or both?
If you want help looking a the details of the system:
Tell us the serial number of the system so we can look it up on the HP Support site.
Then you can go to the HP support site and find out what kind of BIOS it has (or maybe when it is powering up) and see the list of beep codes:
There might be more lists if you poke around.
You can also find the manuals for your system where there might be clues.
If you don't see the answer I wonder if it would make sense to ask in the HP community where the HP experts and sometimes actual HP support people hang out?
The details of your system on the HP support page will tell you the amount of memory the system supports and maybe what kind you need.
After you find out how much memory the system will support you can see if there is room for more.
If you want to add more memory I would visit here and let their scanner take a look at your system and what it suggests:
Edited by joseibarra, 17 April 2018 - 02:42 PM.