No startup after CPU and SSD replacement, diagnostic LED confusion2017 iMac 27 Retina 5K, i5 3.8, 8GB VRAM EMC 3070 I just swapped my CPU to the 7700K and changed out the SSD to a Feather...
"No startup after CPU and SSD replacement, diagnostic LED confusion"に関する回答UPDATE: Reinstalled the i5 and all is functional again. Looks like I killed the 7700k with my mistake or it was DOA when I got it. Logic board diagnostic LEDs will not progress past LED 2 with a bad CPU. Fledgling Feather Turbo SSD working perfectly. Looks to be a great option for PCIe blade upgrade.