I accidentally uninstalled my device driver

Hello,
I own Sony Vaio E SERIES_VPCEH35EN. I own a NVIDIA Graphic card Geforce with cuda. I dont know what has happened to it after i have upgraded my laptop to windows Ultimate. It says that its running on standard VGA graphic adapter. Because of this i am not able to watch movies n play games. Before the upgradation i was able to watch all movies n was able to play games. Now i dont know what to do. I even tried downloading some softwares which were available for free; which said that it would read the pc, search it and install. But all were in vain. Most of them said it couldnt find the graphic card n rest of them didnt work. Pls help
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  1. Have you tried NVIDIA's driver support website?

    http://www.geforce.com/drivers

    Quote:
    I even tried downloading some softwares which were available for free; which said that it would read the pc, search it and install. But all were in vain. Most of them said it couldnt find the graphic card n rest of them didnt work.
    This action probably downloaded and installed malware on your notebook.
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