Thanks Jake
I tried with your clover.
But I got the failed screen.
I attached my efi folder and failed screenshot.
My system:
Optiplex 9202, i5-4570, 12 Gb of 1600 MHz RAM, 500Gb SATA, Intel HD 4600 1536 MB, BIOS A05
El Capitan and Sierra were worked in my PC but not High Sierra
What is wrong in my side?
Regards
EFI.zip