W880D4U Windows only displaying on iGPU
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=113482
Printed Date: 31 Mar 2026 at 7:48pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: W880D4U Windows only displaying on iGPU
Posted By: sine_x
Subject: W880D4U Windows only displaying on iGPU
Date Posted: 31 Mar 2026 at 4:27am
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Hello everyone, I have a new W880D4U and I?™m having issues with a PCIe GPU Intel B50. When starting up, the image is output through the GPU and I can work in the BIOS, etc., but once the operating system (Windows 11) begins to load, the display stops updating on the monitor. If I connect the monitor to the iGPU, I can see that in the operating system, the GPU is missing in Device Manager. What could this be related to? BIOS: 2.01 (also tried 1.14) Resize BAR: Enabled Above 4G: option not found in BIOS. |
Replies:
Posted By: Xaltar
Date Posted: 31 Mar 2026 at 1:08pm
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Make sure you have installed the latest drivers for your GPU. From what I can tell looking at your board's manual and specs it would appear Resizable Bar is only available when 64-bit PCIe Decoding is enabled (another name for above 4g decoding). I suspect it is enabled by default on your board. To troubleshoot: Make sure you have disabled CSM Disable the iGPU and Intel Onboard Graphics Set primary display to PCIe Then try to boot into Windows. The only available display adapter in this case should be the B50 dedicated GPU, this may force windows to use it and allow you to install drivers. Good luck. ------------- 
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