Black screen on MS Surface Pro (5th)

I installed the latest version of Unity yesterday evening, since then, I'm unsuccessfully trying to solve a the following problem: when I start a new (3D) project in Unity the whole window is completely black except for the 3D-view, which is completely magenta-tinted (though I can at least see the grid and icons and can move the camera around there).

The only other visible thing is the menu bar (file, edit, asset, etc.), though any sub-menus opened from there are also entirely black.

I'm running Unity on my Surface 2017 (5th generation) with i7.

Any ideas?