But maybe Ill start looking into Crucials warranty info too. i wouldn't say I am any expert so can't debate the theory, but not a new build and same 4 sticks worked in same system for however long, only noticed lack of 8 GB when benchmarked, and same 4 sticks work in other slots just running in God knows what mode right now.

Still faulty memory stick I think, had similar thing when I first built my x299 system. Sorry for long post, figured more detail better then generic. So what the heck is causing slots 3 and 4 to not recognize the RAM other then Mobo issue? Because sure I have 32 GB usable now but i cant run it in quad channel mode now. Moving same stick from slot 4 to 2, BIOS shows 32 GB and windows/apps show that too.

Figured to try other slots, moving stick from slot 3 to 4, same result not registering. At this point I'm running in default settings, no overclocks or the like since BIOS update. Updated to 1.24 successfully, still no RAM recognized in slot 3, ones in 1,5,7 all fine. Said screw it I will lose all my settings and update. Figure this eliminated RAM stick issues, but noticed i had a fairly old bios version. Swapped the sticks in slots 1 and 3 with each other, still no RAM registering in slot 3, but the same stick that was in slot 3 previously shows up in slot 1. Removed stick and reinserted, same result. Went to BIOS and it showed same, the RAM in slot 3 was not registering. Today noticed doing various benchmarks I only showed 24 GB of my 32 GB installed.

Been running fine since and had 32 GB in slots 1,3,5,7 show as I setup BIOS for new processor initially. Since then have upgraded to the 2080 GPU and i9 9940x. I previously had only momentary power on issues, figured out it was my PSU. I contacted Evga earlier today, but not sure message went through since dont see it in my product support history but maybe takes a bit to show up and forums sometimes know answer quicker then Evga support.

3 ram sticks in 4 slots