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オリジナル投稿者: אורן ליאור ,

タイトル:

black screen after startup

テキスト:

I have iMac 27 late 2013

in startup i can hear the start sound and the system is working

but black screen, usually when unplugged from electricity and left for few hours it comes back to itself.

but now even this is not working .

start/ off  button is working

any ideas ?

デバイス:

iMac Intel 27" EMC 2639

ステータス:

open