Sometimes when we try to delete a file in Windows does not allow this because it is locked. This can occur because the operating system does not release the resources on these files “unforgettable”. 

To eliminate them we will go to Start> Run, then type:

Cmd

And clicking OK.
This will open the shell with the shell opened by clicking Start> Shutdown to display the options to Shutdown, Restart and Sleep.
At this point press CTRL + ALT + DEL and then click on Cancel on the shutdown window.

This makes the explorer process is complete.
Now we will go to the window of the interpreter and we are in the folder where the file to delete.
To navigate through the directories the cd command to go up one level nombre_de_la_carpeta and cd .. to lower levels.

To delete the file filename keyboards once we are located in the folder where you are.

To return the system to normal going to File> New Task> Run and type explorer and click OK.

With this, our system returns to normal with the file already deleted.