https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 01 May 2026 15:30:39 +0000 Mon, 28 Feb 2022 12:48:46 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=19827 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=19827&PID=94219&title=2nd-gpu-riser-problem-windows-boot-freeze#94219 Author: Deeznutz
Subject: 19827
Posted: 28 Feb 2022 at 12:48pm

Hello, im having the same issues on my b550m motherboard with ryzen 5 5600g

So where did you connect your pcie splitter? To the x16 slot or x1?

Thanks in advance]]> Mon, 28 Feb 2022 12:48:46 +0000 https://forum.asrock.com/forum_posts.asp?TID=19827&PID=94219&title=2nd-gpu-riser-problem-windows-boot-freeze#94219 https://forum.asrock.com/forum_posts.asp?TID=19827&PID=90999&title=2nd-gpu-riser-problem-windows-boot-freeze#90999 Author: snq
Subject: 19827
Posted: 17 Nov 2021 at 2:17am

I have just received the splitter. Connecting GPU through the splitter makes it work.
BIOS settings:
PCIe lanes config 8x8x,
PCIe speed - Auto (not Gen2/1)
4G Decoding Enabled
Resizable Bar Disabled]]> Wed, 17 Nov 2021 02:17:55 +0000 https://forum.asrock.com/forum_posts.asp?TID=19827&PID=90999&title=2nd-gpu-riser-problem-windows-boot-freeze#90999 https://forum.asrock.com/forum_posts.asp?TID=19827&PID=90987&title=2nd-gpu-riser-problem-windows-boot-freeze#90987 Author: snq
Subject: 19827
Posted: 15 Nov 2021 at 11:03pm

Hi! I'm having a hard time connecting second GPU (2x3080) over the 1x to 16x riser (PCIE3 slot) to my B550m Pro4. After connecting second GPU I can boot to Windows normally, but the 3080 shows as Microsoft Generic Display Adapter. After Windows installs the drivers for the graphics card the system becomes reeeaaaly laggy (few seconds lag) and the device state is "Windows is uninstalling drivers" (code 21 AFAIR). When I connect the riser to PCIE1 - no problemo alles bueno. From what I have read this board is supposed to support dual GPU (8x/8x PCIe config, but still). I'm currently waiting for a PCIe splitter like suggested here .

System: 3080 v1, 3080 v2, 5600x, B550m Pro-4, Seasonic PX-850 W, Windows 10 Pro, 32 GB DDR4


I have already:
- disabled CSM and reinstalled Windows
- changed PCIe GFX lanes from 16x to 8x/8x
- changed PCIe speed from Auto to Gen2 and Gen1
- enabled 4G decoding
- disabled resizable BAR
- try to install drivers with only over-the-riser GPU installed - same result
- creating 32 GB of paging file

Anyone has any luck with such system configuration?]]> Mon, 15 Nov 2021 23:03:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=19827&PID=90987&title=2nd-gpu-riser-problem-windows-boot-freeze#90987