W8, GTX 980
Short description of error
This problem is an old one. If you have some background image set (in any view) and you press a key on Numpad to get to that view and accidentally press some rotate view key (for example, You press 3 and accidentally (just in a moment after 3) press 6 - while the view is still rotating), you get view change process stopped and the background image set.
Here is a result:
Exact steps for others to reproduce the error
It works with any model and any picture on the background. Just quickly press some VIew key and Rotate view to freeze rotation and get bg shown.