2010 iMac goes dead c. 25 seconds in.


Petrock

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I press the power-on button. I get the musical tone, Apple symbol, and progress bar. The progress bar stops in about 25 seconds and 30% across; the screen goes black, and the iMac turns off. Anyone know what this is ?
 
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Cory Cooper

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Hello and welcome.

It could be a number of things:
-No free space on the hard drive
-Failing hardware - hard drive, graphics card, logic board
-Improperly seated RAM
-Corrupted install of OS X

Have you recently had any other issues with freezing, power issues, etc.?

C
 

Petrock

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No previous issues. I'll check those things you mention, as best I can. Will let you know. Thanks !
 
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