So i have reinstalled windows for a friend/customer.
seems all okay until i installed any of the drivers for the GT640 graphics card,
i have provided pictures instead of trying to explain what is happening, if i uninstall the drivers it works fine .
i have used the most recent drivers and older versions,
used different monitors,
Windows 7 64bit professional
Not sure what it was like before as the hard drive had failed
weird artifacts :


seems all okay until i installed any of the drivers for the GT640 graphics card,
i have provided pictures instead of trying to explain what is happening, if i uninstall the drivers it works fine .
i have used the most recent drivers and older versions,
used different monitors,
Windows 7 64bit professional
Not sure what it was like before as the hard drive had failed
weird artifacts :

