"MacBook Pro 2013 - cannot load Apple Hardware Test"에 답변Hey Handymac, What was the issue of your GPU in your 15” early 2013 MBP? I have the same one and having a problem with the battery which is got change cuz turned off itself around 50%. Got replaced and the same issue. Also, about the GPU. when I hooked up to HDMI the screen start to the flickering of the MBP and the signal on the TV is appear after a few minutes then the picture starts distorting. It looks like the tv’s screen is broken. I would be very grateful if you reply !! Thank you !!!