Cause Vertical Bars On Display Macbook Pro 15 Retina Display Mid 2014

Chosen Solution

What causes blinking vertical bars on display

Does an external display show a clean image? If it does then your display assembly will need to be replaced. If the image is also messed up then your logic board graphics services is messed up. My money is on the display 15” MacBook Pro Display Assembly, Apple T/N 661-8310 and here’s the guide MacBook Pro 15" Retina Display Mid 2014 Display Assembly Replacement