Hard Freezing Computer Part 2

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So previously I made a thread about my computer freezing. I essentially said it's been freezing for a while and I'm finally getting a chance to work on fixing it. What's essentially happening is that randomly my computer will completely hard freeze. This means I can't alt tab, control alt delete, nothing. I know it's a hard freeze because even my keyboard won't respond say if I press numlock or caps lock. Anyways these freezes will happen for the most part random. I can be away while nothing's going on and it freezes or I can be alt tabbing. Though I did notice that when I do certain actions like alt tab, open a new window etc etc it would freeze more often. Anyway I did simple stress tests on my GPU and CPU which both came clean and I believe that and I kept knocking things off my list. I looked to update my bios, though it turned out I had the latest version so I flashed it for a clean run. I cleaned my CMOS and did some ram tests. I ran memtest on one stick of ram each for the last two nights and they both came up with 6 passes completely clean. I figured no big deal I'll just root the problem out by leaving a stick in and seeing if my computer freezes. Well I did this and nothing happened. When a stick is all on it's own my pc doesn't freeze(yet). So far I ran 1 day on one stick, each, and nothing happened. Is it possible that the freezing is occurring because I'm running two sticks at once (which are identical)? Is it just luck? I'm also using the same slots they were in as well. So one stick has only been using the slot it's normally in as with the other. Anyone have any suggestions at all or should I just keep running my pc with a single stick for a while to see if it freezes or not? Now while I'll accept all the help I can get, but please don't give any information based on a whim or if you aren't familiar with this kind of troubleshooting. I know it's not a GPU issue and I know it's not because my "custom loop is leaking on your ram since water cooling is bad for computers". Trust me, I already got the beyond stupid answers from mentioning my issue on reddit. Thank you all!

 

TLDR; getting hard freezes, most likely a ram issue though each stick comes back with 6 passes on memtest clean. PC doesn't freeze when only one stick is in the machine doesn't matter what stick or slot. If you really want to be a true help read the whole paragraph please.

 

My PC specs are the following

Intel i7 5820k No OC

980ti No Oc

Asus x99-a/usb 3.1

Crucial Ballistix Sport 16gb ram DDR4 2400 1.2v (2x8gb)

EVGA supernova 850 watt G2

Intel 730 SSD

WD black

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