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My Mid2015 MacBook Pro has a weird gray line on...

My Mid 2015 15'' MacBook Pro has a weird line on the screen at start up.   It's only there for 20-30 seconds but it is definitely not normal.   Anyone have any ideas?   It happens at every start up, regardless of the program I start using.

 

IMG_1322.JPG



Try an NVRAM reset:

How to reset NVRAM on your Mac - Apple Support



最后更新:2017-09-04 00:43:08

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