x370 Taichi Ryzen 3900x wont boot SLI
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=13982
Printed Date: 08 Aug 2025 at 8:46pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: x370 Taichi Ryzen 3900x wont boot SLI
Posted By: Triton
Subject: x370 Taichi Ryzen 3900x wont boot SLI
Date Posted: 04 Apr 2020 at 6:28am
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Hi I have upgraded from 1600x to 3900x and I had sli with my old build. Now after several hours I managed to boot with 3900x normally with the latest BIOS 6.20 but only with 1 card. No boot when 2 cards inserted. No special indications on Dr Debug coolers working fine and then going idle, system flowing but no signal and no connection of the keyboard. I use 1080 Ti and another one with higher frequency. Can you help please? |
Replies:
Posted By: Xaltar
Date Posted: 04 Apr 2020 at 7:29am
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I am not sure but it could be something to do with the BIOS trying to enable PCIe 4.0 on your board and failing when both cards are inserted. Check through your BIOS options for PCIe generation settings, if you find any set them to gen 3. ------------- 
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Posted By: Triton
Date Posted: 05 Apr 2020 at 10:49pm
| Thank you for the help. Solved by removing drivers and switching cards pci ports. |