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JacksonHowl Author

Level 1

8 points

Vertical lines on 13" MacBook Pro Retina

Hi guys,

After some assistance/ diagnosis with my 2014 A1502 13" retina MacBook Pro.

Was all functioning ok until this morning. I plugged the laptop into my LG 34um67 34" monitor for the first time and it wasn't displaying correctly on the screen. When I unplugged the laptop I started to see lines like the ones shown below.

The laptop does display fine on the external display now but after numerous restarts and PRAM resets the laptop is still showing these vertical lines. Any idea what it may be?

Thank in advance!

MacBook Pro with Retina display, OS X El Capitan (10.11.4)

Posted on May 16, 2016 5:58 PM

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5 replies

Level 10

111,204 points

May 16, 2016 6:03 PM in response to JacksonHowl

It looks like you may have a bad graphics card. Try running Apple Hardware Test

Using Apple Hardware Test - Apple Support

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May 16, 2016 6:10 PM in response to JacksonHowl

GPU is failing, or bad cable or bad connection.

Take it in: https://www.apple.com/support/macbookpro-videoissues/

Your Mac is not in the recall, with any luck you are under warranty.

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test.

Genius reservation http://www.apple.com/retail/geniusbar/

on-line https://getsupport.apple.com/GetproductgroupList.action

check warranty https://selfsolve.apple.com/agreementWarrantyDynamic.do

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JacksonHowl Author

Level 1

8 points

May 16, 2016 6:10 PM in response to macjack

Thanks for the response mate. I ran the test and it found no errors. Could it still be graphics card?

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May 16, 2016 6:12 PM in response to JacksonHowl

JacksonHowl wrote:

Thanks for the response mate. I ran the test and it found no errors. Could it still be graphics card?

Yes

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Level 10

111,204 points

May 16, 2016 6:20 PM in response to JacksonHowl

Yes, AHT often fails to identify the problem. Suggest you take it in, as leroydouglas suggests.

Reply

Vertical lines on 13" MacBook Pro Retina

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