boot up problem yes-chime sound but no screen no external display
MacBook Pro 15" Core 2 Duo Models A1226
iT BOOTS AND CHIMES ONLY A BLACK SCREEN
i SWAPPED MEMORY NO DIFFERNCE
i PLUGGED IN A EXTERNAL MONITOR -NO DISPLAY
I HAVE TRIED BOOTING OFF OPTICAL DRIVE NO DIFFERNECE
좋은 질문 입니까?