I have an HP Elitedesk 800G1 USDT with 15-4570s cpu, 8gb ram, samsung evo 25o ssd and a Broadcom dual wifi/bluetooth m2 card. This system works perfectly running Catalina v15.2 using the clover bootloader. However I have not been successful booting catalina using opencore v0.53 or 0.54. I am running catalina using opencore successfully on my other MSI haswell based computers.
The HP system always stops during the booting process at IOConsoleUsers: gIOScreenLock .....than after a long pause will reboot.
All the research I've done suggests this is related to a problem with loading an external video card but I am only using the IGPU . This model of elitedesk uses a laptop style motherboard that has an mxm slot for a dGPU but the slot is not populated. The bios recognizes the IGPU and allows no options to change any parameters for the IGPU.
I would appreciate anyone's input on this issue.
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