I had already put the ram onto the motherboard. I put in all four dimms.
I then applied thermal paste and put the cooler on and screwed her down. Once the power supply arrived I wanted to do a test run out of case.
But just before first power up I decided to take out the red dimms and use only the t-force deltas, to make any trouble shooting easier at first.
The machine was immediately able to boot up and i got into the bios. After some time of studying the in's and outs of the new UEFI Bios, I had learned enough that I felt confident using it.
I wanted to get the bios updated, but in doing so i made a couple of mistakes, nothing critical, just things that made it take longer than it should have. First I didn't realize I had downloaded the wrong bios file. I could not figure out why it would not find the file. then I realized that the z370 has different models.....the pro4 i had downloaded was wrong. I had thought the /OEM part of the name was just that it was oem....but nope - part of the model name lol.
Once i had the proper bios, my next mistake was chosing the wrong boot.....i selected the usb drive when I should have been selecting UEFI Usb.
upon figuring that out the Bios began updating! wooohooo!