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While I was using my MacBook Pro (Retina, 15-inch, Mid 2015) running 10.12.1 Sierra, dark horizontal lines popped up and the screen flickered a little. They turned off and on for a bit and I took 2 pictures while they were on and off. It's been 2 days and it hasn't turned off again. I restarted my computer by it's still there. Is this a hardware issue? What's going wrong here?

Top image has lines, bottom image is normal.

Lines No Lines

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Apple just today released the macOS 10.12.2 update. If you have not already done so, check the App Store for this update and install it.

Other general troubleshooting procedures are to reset the SMC, and also reset the NVRAM.

If the problem persists it would be good to know if the problem occurs both when running off of battery and when plugged into the charger. Also, if other peripherals are connected (displays, hard drives, etc.) does the problem occur when they are not connected?

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  • IMHO macOS Sierra seems to really bring out the graphical errors in many devices. – CJ Dana Dec 13 '16 at 22:23
  • @SteveGraff Thanks for answering! I updated, reset the SMC and NVRAM but the problem still didn't go away. It happens whether I'm plugged in or not and whether I have any peripherals in or not. I was gonna try to open up the bottom and make sure the screen bus is securely connected... not sure what else I can do other than take it to the apple store. – Kai Dec 14 '16 at 0:16
  • @Kai does your problem solved? How much does it cost? – Set Kyar Wa Lar Jun 30 '18 at 3:57
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    @SetKyarWaLar No, unfortunately the problem got even worse until the screen didn’t even work and was just multicolored lines everywhere and I couldn’t see anything without plugging in a monitor. I never took it to the Apple store and just decided to buy a new one. – Kai Jul 1 '18 at 12:14

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