A technician is dispatched to repair a computer that appears to boot correctly, except no video output is being displayed. No beep codes are given by the computer, but drive activity lights and…

A technician is dispatched to repair a computer that appears to boot correctly, except no video output is being displayed. No beep codes are given by the computer, but drive activity lights and keyboard lights work correctly. The technician decides that the video card may be defective and removes it from the computer, expecting the computer's POST process to provide beep codes with the card removed. Instead the computer boots properly. Which of the following is MOST likely the cause?