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Hello all, I need help for this issue! The description below: Sometimes at Mac Os startup, after system choose selection in clover screen, the display show the black screen. I can't understand why, cause the system work very well and this problem occurs randomly. I think this problem occurs when the pc is power off for some hours, but I really can't understand. The machine specs below: I've a triple boot with Catalina, Manjaro and Windows 10 (3 disks, one system for disk) all work properly. CPU: 4gen (Haswell) i7-4790k 4 Core / 8 Threads (successfully overclocked to 4,6Ghz) RAM: 20GB DDR3 3 Banks (2x8 Hyper X + Corsair Vengeance 1x4 all banks successfully overclocked to 2000Mhz) Motherboard: GA-Z97-HD3 (rev. 2.0) Bios F9 GPU: EVGA Nvidia Geforce GTX 780 Ti 3GB DDR5 (kepler chip and fully supported in Catalina, best Nvidia card avaible for Mac Os) 1 SSD NVMe M2 Silicon Power 256GB in a PCIEx16 3.0 to M2 NVMe Adapter for Mac Os 1 SSD Sata III Samsung Evo 850 250GB for Windows 1 SSD Sata III Kingston 250GB for Manjaro 1 HHD Seagate 1TB for Mac Storage (HFS+) 1 HHD WD Blue 1TB for All systems storage (exfat) (The GPU have only have one DVI-D port worked, HDMI, DP and DVI-I are damaged, but work well on DVI-D and i have this issue only with Mac Os system randomly) Already tried to update Clover, Kexts, Uefi drivers and Catalina. Bios have the default options for hackintosh builds: XHCI Handoff Enabled IO Serial Port Disabled OS Type to Other OS Secure Boot Mode Disabled CFG-Lock Disabled VT-d Disabled Please help me. Thank you all in advance. (I post my EFI for show you, I've removed the Microsoft folder cause the attachment max total size limit in the forum) EFI.zip EFI.zip