Chosen Solution
Hi all, Imac 2017, 21,5 inch non retina. 18,1. I updated my RAM from OWC and new SSD (old fusion driver) form Samsung 2,5. The first run was good! Altough it took a while to load te screen. The second run there was only black screen and lowd fan! No display. At the first run the screen wasn’t completly sealed I first wanted to test, it worked! Before the 2nd test I closed the screen with the tape. What can be wrong and how can I fix it? Thanks guys!
Sounds like the display cable came loose or got damaged. Sadly, you’ll need to take the display back off to inspect things. Make sure you follow the guide and use the proper tools.
