maybe geforce 780m is not working?
I have troubles with my iMac 27 Late 2013, I was on Boot camp Windows 10, when my screen went green and magenta, I have booted again in windows, and it worked again. Then the next day I was on the internet watching a video, when the same happened in OS the screen had green and magenta artifacts and stopped working. When restarting and selecting the boot partition, the screen was totally color messed up (green and magenta) and nor OS nor Windows wanted to start. After some restarts, the screen went black. Now I can hear turning on the iMac, but I have no screen anymore, everything is black.
Do you have any suggestions what I can do, what is the problem?
I think the graphic chip is gone. Do you know is it possible to change it? Is it worth to try?
Or is my iMac definitely gone?
Any suggestions would be great
thank you, Franz
Questa è una buona domanda?