Issues with early-reboot

Hi all!

I'm having an issue with my main PC during installation. (Tryign to install High Sierra)

I get the drive wiped in disk utility fine, get it formatted to journaled like the guide says... Select it to install to, it says 2 minutes remaining on copy, gets 30% done then instantly reboots:

I'm running an 8700k (not overclocked)

Z370 Gaming Pro Carbon Motherboard

16 GB 2133 DDR4 RAM (downclocked, no xmp running)

1080Ti


I did verbose on the last attempt to install, but not sure how...

Issues with early-reboot