I have MacBook Pro Retina running Windows 8.1. I do not have a PrtScr key. Also, shift+fn+f11 key combination doesn't work. What is the shortcut to take screenshots?
I just messed around using Bootcamp Windows 10 on Mac laptop, the issue is not the control, it is the setup:
First, set up OneDrive
Prompt will ask you if you want to save screenshots to OneDrive: Yes
For future screenshots use the original command of FnShiftF11
The FN+Option+Shift+F11 (and also FN+Shift+F11) will only work if you have the setting on Boot Camp Control Panel tuned off (unmark the checkbox): Keyboard tab > "Use all F1, F2, etc. keys as standard function keys..."
FN+Shift+F11 = Captures the full screen
FN+Option+Shift+F11 = Captures the current active window
If you hear the click sound when taking a screen shot the the shot has been taken and it is in your Clipboard.
To get it, open any application (like paint or other) and use the "Paste command" to see it/modify and save as a file in a location of your choosing.
⇧ shift+fn+F11 is the correct keyboard shortcut to emulate a Print Screen in Windows, however this shortcut requires the Boot Camp drivers to be installed and be running in Windows. Make sure you have the drivers installed correctly and check whether the keyboard is configured to require fn in Boot Camp Control Panel.