Taichi x399 won£™t detect ram slots C2 or D2
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=19313
Printed Date: 08 Aug 2025 at 10:09am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Taichi x399 won£™t detect ram slots C2 or D2
Posted By: Bmars520
Subject: Taichi x399 won£™t detect ram slots C2 or D2
Date Posted: 27 Jul 2021 at 2:36pm
I am trying to install corsair vengeance Lpx 2x8gb 3600MHz ram but the slots C2 and D2 just will not detect any ram. I?™ve tried reinstalling them many times, I?™ve tried reseating the cpu (threadripper 2970wx) many times, I?™ve tried rearranging them many times. They all work when in either A2 or B2 but never C2 or D2. Are my DIMM slots bad? 
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Replies:
Posted By: Xaltar
Date Posted: 27 Jul 2021 at 11:18pm
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With TR4 sockets this is usually a CPU seating issue. I must have reseated my CPU half a dozen times before I got all my slots to be recognized when I built my system. Look up a good guide on installing a threadripper CPU and follow it closely. Barring physical damage to the board it is highly unlikely to be a board issue. Either the CPU isn't seated correctly or the CPU has a damaged channel on it's IMC. 99.99% of the time it's a seating problem though. Uneven pressure when tightening down the socket's screws is a common culprit. ------------- 
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Posted By: Bmars520
Date Posted: 28 Jul 2021 at 12:07am
| Okay, I will try this. Thank you |
Posted By: Bmars520
Date Posted: 28 Jul 2021 at 12:35am
| This worked, thank you so much |
Posted By: Xaltar
Date Posted: 28 Jul 2021 at 5:33am
Happy to help  Enjoy your beastly setup  -------------
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