new X470 Master SLI no screen

After that the PC had booted up nicely with ram downclocked to 2666mhz and then I was able to freely switch the ram banks as I wanted and Pc had no problem booting up and going through tests after setting up windows.
Although I can't get over 2800mhz no matter what I try, at 2933 the PC will not boot every 3rd run and spews errors in prime, while 3k and 3200 won't even boot. So at the moment I'm running 2800 14-15-15-32-50 1,35v and have no trouble with it.
Fyi the Ram kit I use is Goodram IRDM x 3200mhz 16-18-18-34-52 2x8gb

The Bios is the retail one 1.0v as I didn't have time to get the one with agesa patch.

CPU/cooler, 1 stick of RAM, GPU and PSU with nothing else connected. If you have different display options (HDMI, DVI, Display Port), try different cable types, sometimes HDMI in particular can be quirky.  

You never listed all of your components.  List out your PSU, GPU, and even your storage devices.

I have gone into detail about the how multi rail vs single rail work and what their purposes are in the past, I really need to put up a sticky about the subject.

In a nutshell, sub 800w multi rail PSUs are for basic, office/browsing systems using an iGPU or ultra low end discrete GPU. 800w and above multi rail PSUs are typically used in servers or high end multi GPU systems.

Single rail PSUs are what you want for average gaming systems.

Multi rail has it's wattage split among the number of 12v rails (lines) it possesses, this is usually displayed on the unit's specs as 12v1, 12v2 etc. If you see this, don't buy the PSU unless you plan to use it for a very basic system or understand how to load balance your power distribution and even then, I avoid them. A multi rail PSU is in essence multiple low wattage PSUs slapped together with their total wattage being listed. 

Your Straight Power 10 has 4 rails so each rail can handle a MAXIMUM of 200w (18amps per rail). That is not good enough for your system.

In contrast 500w single rail PSU will have 1 +/- 45 AMP 12v rail. This is what you want.

I always advise against BeQuiet's budget PSUs, they almost ALL have multiple rails. In my opinion it's false advertising, unfortunately it's legal because the combined power is technically the rating of the PSU. They should list the wattage as that of the most potent 12v rail imo, it would avoid a lot of confusion. 

No, you want boot training on, it's purpose is to make the RAM work better with the system 

Set the frequency to 2133 and all settings auto and see if you can get POST. Once you have post you can then start pushing up the speed a little at a time.