What have I done?? Whenever I turn computer on, I get a picture on my screen that says "SELF TEST" and has a dancing set of Red,Green & Blue columns (up & down the screen), and words:"This monitor is working. Please check video cable & computer" Then I push the second button on the CPU (the one directly below the start button); the Self Test thing disappears and computer is O.K. BUT IT RETURNS EACH TIME I TURN ON THE UNIT!!! What do I do to get rid of this self test????? Thanks for any assistance. Noelie Barnett