Hi guys.. So I have this Macbook Pro Early 2015 the 13" one.. when turning on seems to be fine but after logging in theres a lightning thunder-like appearing on the screen.. has this happen to anyone of you? Am I the only one? I bought it February of this year. It does not show up everytime.. just randomly. Maybe 8x now. MAC OS X EL CAPITAL 10.11.6 Here is the link: I took a pause from the video due to the quick disappearance.. at 13 seconds onwards frame. Please see attached photo. Is it alarming? I have never experience so far any problem with my mac except that lightning thing. Thank you in advance..