- Make sure you're not using a VGA connection
Change ports on your video card
Unplug any second third or fourth monitors
If you didn't copy the clover files from the root of your harddrive you're a pussy so stop being a pussy and copy them to your EFI folder. It contain NVIDIAGraphicsFixUp and Lilu.
Enable CSM and UEFI booting, if you can't boot CSM or UEFI I have a version of 5.2 with enoch.
Gigabyte Z370 HD3P
GTX 750 TI 2GB RAM OC
32GB of RAM
High Sierra 10.13.6
Windows 10 Pro X64