Today at work, I needed to take a screen capture of a movie running in windows media 10. I loaded the movie and pressed the "print screen" button on the keyboard. When I pasted the image into photoshop, the media player was black.
After some google searches and playing with the horid media player 10 interface, I figured it out.

1. Open Window Media Player
2. click on the "down arrow icon" in the upper right corner of the app
3. navigate to options
4. click the performance tab
5. click the "Advanced…" button
6. uncheck "use overlays"
7. click "ok"
8. click "apply"
9. click "yes"
10. click "ok"

Now when you press the "print screen" button when windows media player is running, you will capture the movie frame, not a black box.