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Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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Advice for my faulty iMac

Hello,

My iMac shut off randomly.

How can I determine what the fault is? Is the graphics card broken or the power supply?

Cheers

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A shut down is usually the power supply. GPU problems usually give screen artifacts , lines or failure to boot at about the 60% mark on the loading bar.

iMac Intel 27" EMC 2429 Power Supply Replacement

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