235      iPhone_iPad_Mac_手机_平板_苹果apple

mac book pro crashes on start up. starts to loa...

so iv not used my mac in a while  however iv come to use it today it starts with the grey screen with apple logo then  loading bar comes up this starts to fill then the screen goes black and mac is of

how can I get this back working

please help

最后更新：2017-09-10 02:51:54

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