There's unfortunately not much you can do about that other than lowering the settings ...

Currently you have a 16:10 ratio; the game prefers 4:3 *but* if you toggle widescreen mode (not sure what it actually does as I never noticed much effect) it should have an appetite for 16:9 as well. At the maximum your laptop can display that would work out 1680 * 945.

However be forewarned that RTW's GUI seems to have been made with 1024*768 in mind; so it will look blurry at higher resolutions.