Intel Motherboards - B460M Steel Legend

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B460M Steel Legend - No video when using CSM

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=15150
Printed Date: 02 Aug 2025 at 7:53pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B460M Steel Legend - No video when using CSM

Posted By: joshkrz
Subject: B460M Steel Legend - No video when using CSM
Date Posted: 10 Aug 2020 at 12:22am

I'm building an Unraid server that requires CSM to be enabled to boot into its GUI mode.

When enabling CSM however I get no video output at all from both the Intel i5 10500 integrated graphics or from my Nvidia 1050TI. I have to clear the CMOS to restore video.

I have tried the onboard HDMI and the GPU HDMI and DVI. I also upgraded the motherboard firmware to 1.40.

If anyone can shed some light on the reason this happens and how I can solve it, that would be great!

Thanks!

Replies:

Posted By: joshkrz
Date Posted: 10 Aug 2020 at 4:51pm

So I have managed to get video to display when CSM is enabled.

I set all of the CSM options to disabled while keeping CSM itself enabled. Not sure how helpful it was but I also set the boot image to Disabled at the same time so it now displays POST messages. I notice I can only get video to display via the GPU even though the primary GPU is set to Onboard and the iGPU Multi is set to Enabled. I only need CSM enabled temporarily so it isn't a huge issue.