I too have a G751JY but never heard of Samsung Kies3, is it a Samsung notebook photo app? If so, it is probably only compatible w/ Samsung brand purchased laptop/notebooks.
You can find another 3rd party photo app for cheap that will have similar features that will work with your G751 to enable your photo uploads. Good luck. It will probably work on your Samsung Galaxy Note 4 as well, but before you purchase the third party photo app make sure it's compatable w/
whatever version of Windows you have on both systems.