The two most popular graphics card mannufacturers ar nVidia and ATI. Seeing as you can't tell use which graphics card you have, go to each site (www.nvidia.com
) and download the latest drivers from each. nVidia and ATI drivers usually support many of their top products, so you won't have to worry about having to pick the exact model you're using.
I'd suggest trying nVidia first.
When you attempt installation, the driver installer should detect if the appropriate supported hardware is present. If not, the installer will fail, in which case you can try the next one.
Once you have successfully installed the appropriate driver, try turning Aero on again.