Chosen Solution
I purchased 2 8GB RAM modules and 1 TB SSD to upgrade my extremely slow base model 2017 iMac. I followed the instructions meticulously, took me about 4-5 hours from start to finish and now the thing won’t turn on at all! Where do I even start trying to troubleshoot the problem? Everything appears to be reconnected properly. I’m ripping my hair out as I need my computer for both work and school! Update (08/06/2020) 2 led lights
I took everything apart again to double check the RAM modules, noticed one appeared to be slightly damaged so I swapped it out with one of my old ones. Put everything back together and everything is working now.
Locate the onboard diagnostics along the left edge of the logic board near the fan
What are they telling you?
