The two 8 GB DIMMs that came with the computer are in slots 0 and 2 (per the utility, though articles seem to name the slots 1-4), and there are two empty slots (presumably 1 and 3 - I've searched in vain for a motherboard manual or anything that will tell me which slots are which). I'd like to add additional memory to my new HP Envy computer - and I have watched several videos, looked inside, and used the hwi_586 utility to see where the installed memory is, and I still have a question.

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I hope you are right cause if you are i can just go to the store tell them its defective and bring it back to them the problem is that i know only one person with dd4 but he is so scared to fuck his pc that he won't let me even try (he should be ashamed we were both in the same class where we learned to take a part and build computers and he should know that i know what i am doing and he also should know that he supposed to know what he does. If you have not done it, may want to run something like memtest86+ all night on your RAM, just to make sure its not throwing any errors. If you have a buddy with a PC that uses DDR4, you can always try your sticks in his machine and his in yours, and see if the same issues persist, or see if his PC starts having issues, this would help you identify if its the RAM or the mobo/CPU. There is next to no chance the RAM won't work with your setup. I am 100% sure the mobo is bad, but not much I can do about it, and not like I ever use it anymore. I can't run 4 in it regardless of what DIMM slot, what sticks, anything.

One of my old PC's that I don't use anymore but was a folding at home machine for years, will only work with 3 sticks of RAM or less. Its possible the memory controller on the CPU is not quite up to the task of running all 4 sticks, or the mobo has an issue that is causing problems.

Black and blue ram slots