Hi, I need help, please! My Macbook Pro will turn on, but it won't display anything, aka there are issues with video displaying on the computer. I have tried a lot of things... 1) Battery and AC off / hold power for 5 seconds 2) Start and reset the RAM (cntrl + opt + p + r) 3) Turning the brightness way up 4) Control + Option + Restart Please help! I need it for school and can't really spend much time without it... Thanks in advance.