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a1312

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    iMac A1312 - Upgrade to Big Sur

    Hello, I have got multiple issues here. I recently bought a iMac 27" from Mid 2010. The person I bought it from told me that the logicboard was broken, but showed me the GPU that was taken out by an "expert". My first question is how can I find out if it's just the GPU or the whole logicboard...