| Comment | Known issue. A lot of Macs made between 2008-2012 had GPUs that failed - the iMac and MacBook Pro were most affected.
Not fixable yourself unless you want to resolder the GPU chip. It isn't something any repair place can do, it's a Louis Rossman level of job.
If your machine has a built-in Intel GPU and a discrete GPU, try turning the discrete one off and just using the Intel one. The performance will be lower but it'll fix the problem. |
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