If you are using the video ports directly on your motherboard (like VGA or DVI), the graphics are handled by the motherboard's chipset (e.g., Intel G41, G43, or Q45).
A graphics driver is a software component that allows your operating system to communicate with your graphics card. It's responsible for rendering images on your screen, and it plays a crucial role in the performance of your system, especially when it comes to graphics-intensive tasks such as gaming, video editing, and 3D modeling. Intel-r- Core-tm-2 Duo Cpu E8500 Graphics Driver