After pressing the "print screen" key, the entire screen goes black except for the cross-hairs of the cursor, which can be moved around like normal.
The resulting capture is only black, with no indication of what was originally on the screen, save for the mouse cursor.
The same issue occurs if "Shift + Print" or "Alt + Print" is pressed; the resulting capture is nothing but black.
The graphics card driver is updated to its latest version. The only obvious change I can think of is that Windows 10 recently installed its "Creators Update". Previously the screenshots would be taken without issue.
Windows 10 Home edition
OS Build 15063.138
NVIDIA GeForce GTX 980M
Driver Version 188.8.131.5209