I looked and didn't see a card but the GeForce 8400M GT with shared video memory which is on the motherboard. To change this means you change the laptop.
Did you try Nvidia's laptop driver tool?
I am using Sony Vaio laptop, model name is "VGN-FZ25GN", it is powered with Intel Core 2 Duo 2GHZ [T7250], 3GB RAM, 160GB HDD, Nvidia Geforce 8400M GT, running MS Windows Vista Business ed. I am much interested to have MS Windows 7 Pro on my laptop, before proceeding this, I ran MS Windows 7 Upgrade advisor tool. Result shows that all hardware are compatible except this graphics card - Nvidia Geforce 8400M GT.
Kindly let us know whether I can upgrade graphics card to latest so that I can happily have Ms Windows 7 pro on my laptop.
Please reply and let me know.
Hari Krishna ALN