820-2915-B bootbar for 75% and reboot

[Tillie14]

When I start the MacBook it show the Apple logo than the bootbar for 75%, then I get a blank screen. After that the system turned off and repeat the same again.
Or is this due the graphic BGA.
Any suggestion where to start ?

 

[2informaticos]

Usually GPU issue.
Machine crashes when starts to load dedicated graphics driver.
Disable GPU and try again.

 

[Tillie14]

Usually GPU issue.
Machine crashes when starts to load dedicated graphics driver.
Disable GPU and try again.

Ok i will thanks

 

[2informaticos]

Please, do not quote an entire post, visible few centimeters above...