According to the official HP website, you're running Windows XP. Windows XP is no longer supported, and you're really gonna have to stick to running older games. You can also apparently upgrade to 4GB RAM, but honestly, it's not worth it since your video card most likely doesn't support DirectX9.0c anyways. You might be able to run a couple indie games though, VVVVVV ran just fine on my old computer. (which had similar specs)