Intel Motherboards : Z170 Pro4S does not give post/video signal

I ended up buying myself some RAM that was listed on the memory list on the product page of the motherboard. I now have some Kingston Hyper X Fury running at 2666Mhz (also dual 8GB DIMMs).

It appears this solved the issue of having no POST. Might be an important notice to other future buyers that not all DDR4-SDRAM is supported, and they need to have a look at the memory list on the product page first, before buying any RAM. Thanks again for your help!