Q: 2011 mbp distorted screen on startup
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Apr 28, 2016 12:36 PMby Carolyn Samit,Even though they ran the test at the Apple Store, run it yourself just in case > Using Apple Hardware Test
There has to be a reason for the horizontal red lines and most likely hardware related.
If you haven't done so, you may want to check your warranty status > https://checkcoverage.apple.com
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Apr 28, 2016 12:54 PMby ep69,Carolyn,
Thanks for the reply, I have tried running AHT before but all my system does when I hold down the D key, I get a gray screen that lasts for a couple of minutes then it goes into the regular boot mode, I never get a screen with the AHT icon. Am I supposed to hold any additional keys? Any other ideas?
Now it is booting up normally, I am not getting the red lines.
My date & serial number is in the range for the display warranty extension.
I don't know what happens if the problem doesn't show up at the Apple store, it looks to me like it is a video hardware issue but Ii would imagine Apple won't do anything if they can't see the issue happening.
Thanks,
EP
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Apr 28, 2016 1:32 PMby OGELTHORPE,First take a picture of the display when it shows the distortion.
Then make an appointment at an Apple store genius bar and have them run a VST test.
Your MBP falls into this category:
https://www.apple.com/support/macbookpro-videoissues/
Ciao.
