Download GPU-Z and post an image. While on the GPU-Z image click on "LOOKUP" and it will direct you to a webpage with the GPU card you have installed.
You have a OEM HP GPU Card R7-430: https://www.techpowerup.com/gpu-specs/radeon-r7-430-oem.c2892
So I would suggest you go to HP Support and see what AMD Drivers they have for your GPU card which is why it isn't listed at AMD Download page.
What is the HP computer model that you purchased. Find the exact PC Model and go to HP Support and input the model then go to Software and Drivers to see what HP GPU driver it has for the R7 430 GPU card.
I googled HP AMD R7-430 and found a few download sites that have drivers for that GPU card. Not very recent though.