Nvidia vga driver, required files are missing

During installation of the nvidia vga driver in checking system compatibility stage it gives a message: installer cannot continue, required files are missing. The driver worked successfully on this same mashine with the same OS (Windows7). Now it is happening after fresh install of win7 with intel vga driver preinstalled. What is wrong this time?

hi mike12362,
May I know what's the model of your lenovo PC (eg. Ideapad Y50-70 Touch) and the version of the video driver that you're trying to install (eg. GeForce 340.52 Driver).
In addition, if you have a system with dual GPU (eg. Intel+Nvidia), this uses the Nvidia Optimus Technology, thus, you will need to install the Intel Driver first, followed by the Nvidia Driver (these are custom drivers which can be obtained from the lenovo drivers page).
Regards
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