A videocard driver is typically something you install yourself, because it doesn't come with Windows 7. The same goes for most motherboard drivers. And, remember, most laptops (I can't tell about yours) don't have a separate graphic card, but one that's integrated on the motherboard.
The best place to get your drivers from would be the Asus-site.
I was just curious, I am wanting to do a clean install of windows 7 on my asus laptop. If I do so will it affect my Nvidia card, as in will I be able to just reinstall drivers and be fine, or lose it all together?
Thanks for your time!