Im was on bootcamp yesterday while all of sudden I cannot click anything so I shutdown the computer and go back into windows and only the wallpaper loads? The mouse can move around and everything but there is no toolbar , icons or anything just the wallpaper. 
Solutions that Ive already tried and have failed for me:
Yes if pressed Ctrl+Alt+Delete and ive gone to new task and ran Explorer.exe and the only thing that pops up is " my documents" thats IT.
And in the process section the closest thing to explorer I found was " iexplore.exe", ive also ran than in new task nothing came up.
Solutions that Ive already tried and have failed for me:
Yes if pressed Ctrl+Alt+Delete and ive gone to new task and ran Explorer.exe and the only thing that pops up is " my documents" thats IT.
And in the process section the closest thing to explorer I found was " iexplore.exe", ive also ran than in new task nothing came up.