X399 Taichi Boot Loop After Flashing to BIOS v1.80

unstable or weird events

a quick google reveals as far as these sticks go , well they dont fly the flag very well for gskill lets just say

techpowerup tested them and found very bad overclocking potential even unstable at 3333mhz
allthough they did report they got them stable at 3200 16/16/16/16 BUT this was with a well proven intel system that the xmp was designed for

anyways back to your ram yes the kits in pairs are harder work than the quads

becuase alledgedly............ram kits are suposed to be matched, quite how much effort goes into matching them we'll never know

imagine your worst case scenario (and i mean worst case) one pack has sat on shelf for a month and is sent out to you with a pack fresh off the line  now 4 sticks at least will be a pretty bad match (compared to a quad kit)

anyways enough far fetched examples
lets try and see if there is a way to sort out what of the 8 sticks were supposed to be matched as a pair

first option would be to study the serial numbers and try to find a pattern or concurrent numbering would be nice

try and see if you can use that to match pairs for testing

and yes at some stage ,i will try and help you find settings for manual bios options

but credit for the settinhs will have to go to two guys named chew and 1usmus who are far more gurus than myself

i can just lead you to thier knowledge and help you adjust it for yourself

ive had confirmation today from 1usmus that his ryzen timing calculator will work for threadripper and he seems to be working for the option to set the tool automatically to adjust everything for threadripper

heres a link for a quick read

http://www.overclock.net/t/1640919/ryzen-dram-calculator-overclocking-dram

Just curious:  with 4 sticks you should be installing them in A2, B2, C2, D2 according to the manual?  Just wondering why you're also attempting to use D1 and some of the other slots?

new mobo fixed