The GPU is a chip soldered onto your Laptop Motherboard.
Some of the latest Laptops the Discrete GPUs can be physically replaced since they are in a slot inside the laptop. But you need to find out if your HP laptop is one of the laptops where you can upgrade the GPU. If it is an older laptop chances are you can't and the GPU is soldered to the motherboard.
If you are talking about upgrading the GPU Chip you need to contact HP Support and see if it is possible to upgrade without replacing the laptop Motherboard
