![Purple boot screen with diagonal broken lines after selecting Windows 10 from dual boot menu - Ask Ubuntu Purple boot screen with diagonal broken lines after selecting Windows 10 from dual boot menu - Ask Ubuntu](https://i.stack.imgur.com/INEPN.jpg)
Purple boot screen with diagonal broken lines after selecting Windows 10 from dual boot menu - Ask Ubuntu
![I have this turquoise coloured line up one side of my screen on turn on, then these columns of horizontal purple lines when the MBP is on, the purple lines vary as I have this turquoise coloured line up one side of my screen on turn on, then these columns of horizontal purple lines when the MBP is on, the purple lines vary as](https://preview.redd.it/wi58tug36lv21.jpg?auto=webp&s=0c10e182f2df4a9cd5695622f43a8b2348b4bb5c)
I have this turquoise coloured line up one side of my screen on turn on, then these columns of horizontal purple lines when the MBP is on, the purple lines vary as
![display - MacBook pro 15 inch 2019 screen flickers with purple horizontal lines when iPhone is near my MacBook screen - Ask Different display - MacBook pro 15 inch 2019 screen flickers with purple horizontal lines when iPhone is near my MacBook screen - Ask Different](https://i.stack.imgur.com/JJDj2.jpg)
display - MacBook pro 15 inch 2019 screen flickers with purple horizontal lines when iPhone is near my MacBook screen - Ask Different
![Chelsea Kopta on Twitter: "Mac friends, scary purple lines/bars suddenly started flashing frantically across my screen. This does not look good. What does this mean...? https://t.co/dFTgB3EjJs" / Twitter Chelsea Kopta on Twitter: "Mac friends, scary purple lines/bars suddenly started flashing frantically across my screen. This does not look good. What does this mean...? https://t.co/dFTgB3EjJs" / Twitter](https://pbs.twimg.com/media/EIJ5sbaWkAUcgWv.jpg)