Hello Guys

Been a member here for a wee while but not had anything to discuss until now,have a dreambox 500s and up util now was working fine,now when I turn it on it loads up to show pli jade and just keeps flashing on and off; any help would be very grateful.
Just to renew this question,the box does not switch on or off,does not respond to any keys which are pressed and only turn off at the back of the box,and it probably shows I am a beginner at this game so any help would be very helpful.