853      iPhone_iPad_Mac_apple

When I try to boot up my macbook I get a grey s...

Grey screen with only a few pixels. 

Startup sound goes on but brings me to grey screen. 

Resetting SMC as well as NVRAM could solve the problem.

How to reset the System Management Controller (SMC) on your Mac - Apple Support

How to reset NVRAM on your Mac - Apple Support

最後更新：2017-10-19 11:32:36

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