Glad you got your PC back up and running.
Key thing to remember anytime you change or upgrade key hardware (mainly CPU and RAM) on your MOBO always go into your BIOS and reset all settings to default.
Except your boot drive. Always ensure your boot drive is at the top of the boot list.
Thunder Beaver signing off.
Did you ensure that the voltage of your new RAM was compatible with your MOBO.
DDR4 standard voltage is 1.35 but there are 1.15 1.5 and 1.65 volt DDR RAM modules.
You may just need to manually set your MOBO RAM voltage to the voltage specs of the RAM itself.
Try pulling all but one ram stick (keep one in slot closest to CPU) and test each stick one at a time. You may have gotten a DOA causing problems for the rest of the system.
Even BIOS updates can be necessary for supporting different RAM.
Check the manufacturers website for your MOBO and look at what voltage RAM it supports and if any of the BIOS versions mention support for specific RAM.
I literally did everything i know to fix the problem, also the things you mentioned. But its not that big of an issue but it annoys me sometimes