This is usually a graphics configuration issue. Ensure you have the Lilu and WhateverGreen kexts installed, or check your SMBIOS settings.
Recommended for modern systems. It installs Clover directly to the UEFI partition of your hard drive. multibeast 11.3 0 mojave download
Includes updated AppleALC and Realtek ALC kexts to enable onboard audio chips (like ALC887, ALC892, and ALC1220). This is usually a graphics configuration issue