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2011 mid imac 27" cpu upgrade black screen

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    iMac Mid 2011 27" black screen after cpu upgrade

    Hi guys, I did upgrade from i5 2400 to i7 2600 for my 2011 IMAC 27" , they are both 95 TDP based on my research, however, after the installation, the screen went to black when I was trying to power it up, and after around 10 seconds, the fans were running on full speed without stop. And the...
    • paul315427
    • Thread
    • 2011 mid imac 27" cpu upgrade black screen
    • Replies: 5
    • Forum: iMac
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