You need to download driversweeper from here: http://www.guru3d.com/category/driversweeper/
Then get rid of all Nvidia and AMD drivers then reinstall Nvidia 285.68
i tried to download it but found this notice on the link page...
Attention - Guru3D Driver Sweeper has been discontinued
as such you will not find any download links here any longer.
im not sure what to do now to fix this issue,thank you for the fast reply