I have Ryzen 1800x + Asrock taichi and Gigabyte x370 gaming 5 + Corsair LPX 3000MHz singl rank.
PC not boot Win 10 ( see picture).
Bios shows single channel.
Why singles channel??
Ram is GOOD.
RAM slot A_2 not working (not boot win 10)!
there is no picture
with standard RAM settings:
1. boot with only 1 RAM - if it boots try with other dimm in same slot - if not try different slot
2. boot with both RAMs - try all slots and all combination
when it stable boots into win10 and passes prime95 (10min) and AIDA-StressTest (15min):
3. start OC ram - first MHz up to 3000MHz - then tighten timings
btw since AM3+ Corsair and AMD doesnt like eachother that much - try some G.Skill Memory
AND consider buying 3200er CL14 or even 3600er CL16 - you will have better performance with these
Your Dimms are in the wrong slots for the Taichi, you need to use 2A / 2B.
If 2A still isn't working when you use those two, you need to RMA as the slot isn't working.
What memory speed are you trying to run the LPX on for both mobos? This is a kit that isn't having much luck with Ryzen systems currently, and most people can only get it booting stable at 2400 CL14
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