New Build Having issues

I'm trying to build a computer. When I installed the CPU, Memory and Video card I found out you can test the build outside the case.

My CPU fan works but after original boot the fans on the Video card stop spinning. I removed the memory and got them both to spin but the video card is still not showing any BIOS information. I've used the HDMI and Display Port outputs. I'm new to building computers and I'm not sure what to do next to troubleshoot.

My Build Parts:

ASRock - X370 KILLER SLI/ac ATX AM4 Motherboard
MD - Ryzen 5 1600 3.2GHz 6-Core Processor
ADATA - XPG GAMMIX D10 16GB (2 x 8GB) DDR4-3200 Memory
MSI - GeForce GTX 1070 ARMOR 8G OC

Kinda both the GPU fans acting differently with and without memory and the monitor not showing any information.

I was following a build video on YouTube:
https://www.youtube.com/watch?v=YYsT-i7L5tc&t=981s

I'm at 15:12 into the video where he tests the GPU before putting it in the box. I am not getting the BIOS to display and when I install the memory I got, the GPU fans don't spin up and down, they just stop.

They act differently when the memory is removed spinning up and down as I expected.

Is the memory compatible with the motherboard? Would resetting the CMOS do anything in this situation?

Make sure all the components are installed and properly seated. RAM sometimes looks like it is inserted correctly but actually isn't all the way in, you can look at it from the side and make sure it is seated evenly. 

Thanks for all the responses!
I did have a computer that is working, and I tried the cable and monitor on that, so that tests out.

I will check to make sure the memory is seated properly.

I will check out that video but since the fans work differently when memory is introduced, I thought that to be a bit weird.

I will check out the manual. From what I've seen so far the video I was following was pretty close to the steps in there.

I will give a loooong CMOS reboot, and from what I've read, removing the battery as well can't hurt.

Finally, thanks for the words of encouragement. I've been a coder for many years (longer than I care to admit) and I'm used to things not going right on the first pull. But I could always scrap a project and start over without incurring any cost, this hardware is a different animal. I guess I'm a bit gun shy when it comes to this side of the development effort.

I would agree with you that some hardware you may need to know, but mostly the applications I've worked on were for computers...embedded systems is a whole different animal, I've gotten a taste of that recently which sort of pushed me to do a build. Hardware is a necessary beast to conquer.

Now with memory doled out in the gigabytes and CPU's over cored, over clocked and under worked, I've seen a lot of coders getting sloppier with memory management, but that's a story for another time.

****UPDATE******
I reseated the memory and went to reset the CMOS, I found that the CMOS jumpers were set to reset THE WHOLE TIME!

Went through the reset CMOS process (including removing the battery) and the BIOS screen came up nice a pretty

The GPU fans work differently with and without memory, and I find that a bit weird but to see that screen show up and see the memory being read was phenominal!

I'm having my son help me with this build and the next time we'll be able to continue will be on Friday, but it will feel so good to be able to continue!

Thanks for the advice and encouragement and that's one thing I'll put as a lesson learned!