X870ETaichi Lite not detecting second GPU
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=113408
Printed Date: 15 Apr 2026 at 10:49pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X870ETaichi Lite not detecting second GPU
Posted By: changfrancis
Subject: X870ETaichi Lite not detecting second GPU
Date Posted: 13 Dec 2025 at 1:09am
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Hi all, I need help diagnosing issues on my new build that is unable to detect second RTX GPU. My System Motherboard: ASRock X870E Taichi Lite CPU: AMD Ryzen 7700 RAM: DDR5 ??16 GB ?2 and 32 GB ?2 iGPU: AMD Radeon (integrated) GPU 1: ASUS Prime RTX 5070 Ti 16 GB (PCIe Slot 3 / PCIe1) GPU 2: ASUS Prime RTX 5060 Ti 16 GB (PCIe Slot 7 / PCIe2) M.2 Slot M2_1: Samsung 980 Pro 2 TB M.2 Slot M2_3: Samsung 990 Evo 4 TB Issue The system boots into Windows 11 normally. In Device Manager, only the iGPU (AMD Radeon) and GPU 1 (RTX 5070 Ti) appear. The second GPU (RTX 5060 Ti) does not show at all?”no errors, no unknown devices, nothing. I am using the latest NVIDIA Studio driver (591.44) for the 5070 Ti. I am not sure if anything special needs to be done before Windows will detect the second GPU. The 5060 Ti works in another PC, so the card itself is fine. The GPU is seated properly in PCIe Slot 2. I checked for any obstructions (USB, fan headers, audio headers), and the card fits correctly. The 8-pin PCIe power cable is connected properly; the GPU shows a red LED if no power is attached, so I know the cable is good. Questions 1. In BIOS, how can I confirm whether the second GPU is being detected (install correctly)? 2. Are there any specific BIOS settings required for dual GPUs? - I have already enabled Above 4G Decoding - Enabled Resizable BAR - Tried Auto and x8/x8 for PCIe lane configuration - Am I missing any other steps or settings? 3. Can the iGPU affect the detection of the second GPU? 4. Does my second SSD cause the any issue ? (shared lane ?) Thank you |
Replies:
Posted By: changfrancis
Date Posted: 17 Dec 2025 at 10:51pm
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Problem resolved, these are the steps I took. Not sure which was the critical step but I just did. Reseated the 5060ti, use a new power cable Erase/reset the bios before power up Let ddr5 memory re-trained Plug hdmi display to igpu Once inside windows uninstall Nvidia driver, restarted pc. After pc restart, windows did not show graphics card in device manager. Both 5070 and 5060 missing. I just reinstalled Nvidia driver again and update all my windows 11 package Magically all the GPUs appeared and working normally. Restarted a few more times, all good I also email ASRock support, they tested using similar hardware. Theirs is ok also. I guess it some steps I did wrongly previously. Now both at 8x/8x, bios on default mode and auto. Nvme does not affect the 2x PCIe slots, I will say this x870e taichi lite is really value for money if u are a beginner user for dual gpu. |
Posted By: Xaltar
Date Posted: 18 Dec 2025 at 12:21am
Thanks for the update changfrancis. I am happy to see you got it sorted  ------------- 
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