Guest ssj92 Posted August 8, 2022 Posted August 8, 2022 I have the cMP 5,1 (specs in sig). It was working fine with macOS 12.4 this whole time. I have a Startech PCIe 2-NVMe adapter that had a 1TB SK Hynix & 512GB SM951 SSD. I took out the SM951 today to put into a different PC. After that the cMP no longer showed a boot screen. I can hear the chime. Things I tried: SMC reset NVRAM reset (3 times in a row) Put old GTX 980ti (macvidcards efi) & HDD with high sierra (removed all PCIe cards such as 6800XT, TB3 card, NVMe PCIe card) Tried... Read more Source: MacRumors
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