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Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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Strange blue lines on my MacBook

Hi,

My MacBook Pro was having problems. Apple reseller diagnosed a broken logic board €1000. I went to an other store and they replaced the video card.

The mac is working but now I'm having this strange issue (this problem started before the mac was fixed)

I'm having blue lines (see pictures)

Block Image

Block Image

Block Image

in different websites (not always, sometimes I can work for hours without any problem) the only thing I can do when this happens is power off the mac with the power button.

Is this a software problem or is there still a hardware problem.

Update (04/06/2017)

On the invoice is noted VGA repair. So not sure it was the graphics card that is changed

Answer this question I have this problem too

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Was it repaired under the program?

MacBook Pro Repair Extension Program for Video Issues

https://www.apple.com/support/macbookpro...

When was it6repaired?

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That looks like the mouse is "selecting" text on the screen, does this only happen on web pages?

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Good Point! I didn't magnify the image (my bad)

That's it! The selection action is engaged. So he has a trackpad problem where the click plate is not correctly set or the ribbon cable is not seated. Or, lastly there was some liquid damage on the trackpad logic.

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I would remove the trackpad ultrasonically clean it and inspect the ribbon cable and replace if necessary.

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Okay, but why is the screen stuck when this happens. I need to power down the mac with the power button.

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If it is in a state of constant "selection" it could be locking up the Mac, just a thought

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@idoc open this up, disconnect the trackpad, then try and use it with a USB mouse. If you are no longer experiencing this issue, it will be related to the trackpad.

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