Why there’s a blue Tint on my iMac Screen?

Hello I’ve recently upgraded my HDD in my 20 inch 2009 iMac’ but after replacing everything, the screen took a blue tint, and I don’t know how to resolve it, thanks for your Help

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Rispondi a questa domanda Anch'io ho questo problema

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What does an external display look like?


@I don’t have any external display with DisplayPort and any adapter, Can AirPlay count as a external display or iPad with a software like XDisplay ?


Sadly, that's using a remote connection to the system, not accessing the GPU logic directly.


@danj I see, but how Can i test the GPU, and know if it's a GPU problem or this is the screen ?


Using an external monitor is all there is.


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