This isn't a driver issue... Microsoft failed to realize that people would be using 13" monitors with 3200 resolution, so they didn't design their flagship operating system to accommodate it.
I'm using the same laptop with the same problem. The scaling slider works fine, it just needs to go beyond 200%. Oh, and while you're fixing that, you might want to make cleartype scale beyond 125% so that text doesn't get all pixelated.
This seems so obvious... when is microsoft going to address it?
Here is an example of how small all my desktop apps are at 200%. I included text from this website as a size reference. On a 1080 screen, this app would be twice the size and completely usable.
I had the same exact problem when I downloaded Origin! I'm a hardcore Sims player and was about to install my games, but I could barely see enough to log into my account!