The QVL list for the RAM states "Only one DIMM per channel is supported for DDR3-1866MHz and higher speed as using an AM3+ CPU." That motherboard supports 32GB RAM but only in 4x 8GB DIMMs. That means you are installing 2 DIMMs in each memory channel so it will not work. That can easily be the reason why the system won't post.
The CPU you have is referred to as a 3 module / 6 thread CPU. With the "heavy equipment" line of CPUs AMD did something called Clustered Multithreading (CMT) instead of Simultaneous Multithreading (SMT). With CMT you end up have 2 cores for integer calculations but only 1 core for floating point. Hence your CPU being 3 modules / 6 threads. With SMT you have a full core that can run multiple threads if there are sufficient resources (4 core / 8 thread for example). The AMD "heavy equipment" CPUs were slower clock for clock and core for core than the Intel CPUs at the time. This is why software would say you need an AMD FX 6100 (3 module / 6 thread) or Intel i5-760. The Intel CPU was that much faster at the time that even the added threads of the AMD weren't enough to keep up. You current FX 6100 is only about as fast as the Zen 1 based Athlon 300GE with 2c/4t.
https://www.anandtech.com/bench/product/2833?vs=2670
My 10 year old desktop with an i7-4770k is vastly faster than the FX 6100 at any task.
https://www.anandtech.com/bench/product/2833?vs=2659
What I am trying to say is that just because you have more threads doesn't mean it will be faster at something. Per core performance makes a huge difference. Even if you went to the slowest of the Ryzen 3000 series, the 3100, you would increase your CPU power a lot.
https://www.anandtech.com/bench/product/2833?vs=2709
These newer CPUs will churn through the data faster for video editing than the current one which will save you time. Not to mention the newer motherboards support RAM of 64GB or 128GB depending on the board.