Any recently installed Windows 10 computer system will be running DCH graphics drivers and will not allow non-DCH graphics drivers to be installed. There are some work arounds but they sound dangerous or require a complete system re-install. Could you supply a DCH version of the 435.80 drivers?
The work around suggested in the link below worked for me after I disconnected my Windows Mixed Reality headset (which caused the drivers to be re-installed after I removed them).