Reader of iGuRu.gr Christoforos Androglou presents us with a Windows bug that allows bypassing the time limit that can be set by the service parental control. 
Let's see how it works:
When user time expires, the Windows they throw a blue screen he asks code manager, so they can give extra time.
From this point, you select Restart or Terminate and shortly before the screen closes (still writes that it stops / restarts) you press the 3 keystroke combination ctrl-alt-del to open the task manager.
Somewhere here there is a issue of synchronization, as Christoforos mentions, as he has to succeed about 1 second before the exit is completed. Sometimes it opens the desktop directly, but other times you have to start it from the RUN by following the path File-Run new task or File - Run new task. Type explorer and press enter.
Privileges and access levels are based on the user's access levels (admin or regular user).
Watch the video created by Christopher for iGuRu.gr
https://www.youtube.com/watch?v=PFoTI6PgGug
