Does your PC have an onboard IGP? if it does, I'd suggest switching to it.
Then uninstall both ATI and Nvidia Drivers and programs.
Use driver-sweeper to get rid of all remnants of the drivers and programs associated with Nvidia & ATI.
Reboot and check to see if anything from the two is left on the disc.
Shutdown, insert the Nvidia cards and boot into safe mode.
After preliminary installation of basic drivers by windows itself, boot into normal mode and install the latest Nvidia Drivers, not the ones that came with the Card.
Reboot. Adjust the resolution and then check to see if the problem reoccurs.