Bests & Worsts Reviews from Amazon

So I got these for my build and had a little problem that I haven't seen mentioned. I was using a Ryzen 2700x with a ASROCK x370m Pro4 Motherboard and 32gb of these sticks (3200). They're not on the QVL. Initially I put all 4 in at once, wouldn't even get to the BIOS, just kept boot looping. Tried several things like only 2 at a time for each pair, same issue. I made sure everything was connected, even doubled checked that the processor was seated correctly. Everything looked good, but it still kept boot looping. What ended up working for me was just putting a single stick in the first slot. For some reason when it only had 1 stick in it recognized it and took me to the BIOS, maybe someone knows why? The weird part about that is that it had to be a particular stick. One stick from the pair worked and the other did not. Then I just added each stick and currently have all 4 running. The RAM was only running at 2133, but that's not a big deal you can change that. Not sure why mine needed only 1 particular stick to start, but if you're having an issue like this then give it a shot , maybe it will work for you.