https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 20:21:18 +0000 Mon, 16 Sep 2019 08:54:29 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=12430 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=12430&PID=67907&title=b450-pro4-csm-boot-loop#67907 Author: cx5
Subject: 12430
Posted: 16 Sep 2019 at 8:54am

Good morning @Vulpie05,

Could by any change you are using MBR and hence not able to use CSM off, see https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/switch-from-legacy-mbr-disk-to-gpt-disk-with-windows-10]]> Mon, 16 Sep 2019 08:54:29 +0000 https://forum.asrock.com/forum_posts.asp?TID=12430&PID=67907&title=b450-pro4-csm-boot-loop#67907 https://forum.asrock.com/forum_posts.asp?TID=12430&PID=67840&title=b450-pro4-csm-boot-loop#67840 Author: Vulpie05
Subject: 12430
Posted: 13 Sep 2019 at 11:20am

I have a B450 Pro4 motherboard (bios version 3.50), Ryzen 2200G, no discrete GPU, 16GB FlareX memory 3200C14(2x8 GB, manually timed at 3200 with fast settings), 500 GB SSD, Windows 10 Home 1903. I want to allocate 4 GB or more of memory for the Vega 8 graphics. Per the FAQ, I am supposed to disable CSM. When I disable CSM, save and quit, I get the ASRock splash screen, and then I'm back into bios, no matter how many times I save and quit. Once I revert CSM back to enable, I'm able to boot into Windows. Any ideas what I am doing wrong?]]> Fri, 13 Sep 2019 11:20:02 +0000 https://forum.asrock.com/forum_posts.asp?TID=12430&PID=67840&title=b450-pro4-csm-boot-loop#67840