For starters, a notebook is a BAD candidate for gaming. The components inside a notebook are mostly soldered to the motherboard and you cannot upgrade them. Only RAM and the Hard Drive will be interchangeable. Also, for future reference, NEVER buy an HP for gaming. I personally recommend an ASUS branded computer. (Desktop mostly, but they sell quality notebooks too.) Neither AMD nor HP makes laptops to game on. You cannot replace the graphics on a notebook PC. You can on a desktop PC, but not notebook. Why? Because the graphics chip is soldered to the motherboard. You remove it, you scrap the entire computer. The only currently known way to add a graphics card to a notebook is through a Thunderbolt port, and even THAT is in early development. Not fully possible, at this time. Now, about your processor. Quite frankly, it sucks. It's an AMD processor, AMD does not make high-end processors. They focus on budget processors, while they may compete with Intel normally, they lack a lot of features. Go with Intel as your main processor. Your current computer could probably game on Call of Duty: Ghosts on Med settings. At the most. (Also Call of Duty is NOT a high-end game, it does not require much to run.)
Now since I've informed you, time to look for a replacement. I recommend returning that laptop as soon as possible for a good refund. Once you've done that, look for a good quality desktop. I know a site where you can build your own machine for a cheap price with very little overhead costs. Here's the link:
You must login or register to view this content. They specialize in computer building, and customizing.
Good luck to you.
Hope I helped you somewhat. Like this post if I did at all.