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Toli

Suspended
Original poster
Nov 4, 2021
8
0
Hello, I have a problem with an iMac 2017 21 inch , the imac stratet very hard after 3 - 4 times try he boots through otherwise the hangs at the loading bar (****-----------) (1/4) and then comes a black screen but the iMac is still on her hear the fan and and hard drive running. If he is then on and I play 4K videos 10 min has the GPU 58 *C. Where is the problem here?

After each restart I always have the same problems

I have also already performed a PRAM NVRAM CMS reset the OSX is also freshly installed. Other HDD & Ram I have also already tried

I have also taken out the bios/mainboard battery for 5 minutes.

And this image also comes sometimes but it stays there
 

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Last edited:
I have now installed Windows 10 and did a GPU test with furmark and got this result
 

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