MB Pro 15 "2011 will not boot (gray / blue screen)

Johnny Boris

Reputable
Jul 4, 2014
8
0
4,510
Hey.

I have a MB Pro 15 "from 2011 that will not boot.
It all started when the screen flashed, and divided into "two sides" ..
After this periodic error, it all went over to that it would not boot up. When I get to the start logo (apple), the display of the logo is blue. (Picture attached.)
From there it moves on to a gray image, and then it will not continue to boot .. I've tried to do everything from reloading the OS from CD, and press D for hardware testing during boot - but nothing happens.. What ever I do, it will go to the gray screen.

Does anyone know what could be wrong?