Hello,here are drivers for your laptop:
Drivers & Downloads
Once downloaded make sure you use device manager to see if they are installed correctly.
If this fails try uninstalling the card from device manager and restart laptop.Found new hardware will then install it.
If the card did not come preinstalled on this laptop what make and model is it?
Save the link for future refrences.It is also a good idea to download and save ALL these drivers and put to disk to save for the future in case needed again.