LCD flickering, not due to motherboard or VGA
Hi, about a month ago i purchased a MacBook Pro 13" Retina Early 2015, but suddenly the display gone crazy and it flickers so bad that i can't do anything. When i turn my laptop on, everything is fine, but after I login to the system, the screen starts flickering.
I've already changed the VGA and the problem is not due to VGA.
The interesting fact is that when I connect it to an external display through HDMI cable, both macbook and external display seem to be normal, with no flickers at all, but when i disconnect the cable, the problem comes back.
Any idea that what could be the problem?