@sjfskjgsdkj Thank you for posting on the HP Support Community.
After reading your post, I did go through the Product specifications of your product and found that you have 2GB DDR3 SDRAM (1 DIMM) and Maximum supported 8GB. This information is for HP 2000-2b09WM Notebook.
Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.