https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 13 Apr 2026 07:38:49 +0000 Wed, 26 Jun 2024 23:23:36 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=44815 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=44815&PID=128350&title=ab350-pro-4-impossible-to-turn-off-csm#128350 Author: Xaltar
Subject: 44815
Posted: 26 Jun 2024 at 11:23pm

Thanks for the update and for sharing your fix hamburgler901. A BIOS reflash can
sometimes resolve gremlins though I would always use it as a last resort unless your
board supports BIOS flashback, I mention this for anyone else reading this post in
the future. If you have a BIOS flashback option then there is no harm in trying it
but if you do not, always approach BIOS flashing with caution, a bad flash will
brick a board and cause all kinds of hassle returning/fixing it.

Thanks again ]]> Wed, 26 Jun 2024 23:23:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=128350&title=ab350-pro-4-impossible-to-turn-off-csm#128350 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=128102&title=ab350-pro-4-impossible-to-turn-off-csm#128102 Author: hamburgler901
Subject: 44815
Posted: 26 Jun 2024 at 5:26am

I finally got this to work by reflashing the bios. I had tried clearing cmos previously and it didn't help.]]> Wed, 26 Jun 2024 05:26:56 +0000 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=128102&title=ab350-pro-4-impossible-to-turn-off-csm#128102 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=127971&title=ab350-pro-4-impossible-to-turn-off-csm#127971 Author: hamburgler901
Subject: 44815
Posted: 25 Jun 2024 at 11:12pm

I used diskpart and 'list disk' to determine my bootable usb was mbr. I had used windows media creation tool. It makes sense to me that a mbr bootable media would not work with csm off.

Next I used rufus to create a new bootable usb with GPT. GPT should work with UEFI. With csm off, I still get a bluescreen winload.efi error when trying to boot from the install media.]]> Tue, 25 Jun 2024 23:12:45 +0000 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=127971&title=ab350-pro-4-impossible-to-turn-off-csm#127971 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=127570&title=ab350-pro-4-impossible-to-turn-off-csm#127570 Author: hamburgler901
Subject: 44815
Posted: 24 Jun 2024 at 10:16am

I recently had an incident where I turned off my computer while it was starting up (possibly updating?) which caused me to be unable to boot to windows anymore. I originally installed windows 10 but had upgraded to 11. After trying a few different things I decided to just reinstall Windows. This turned out to not be so easy as I kept seeing a bluescreen when booting from my installation usb. I tried windows 10 and 11. In the end I was forced to use csm mode. Is there any way to get csm off to work on this motherboard ? I'm on bios L8.02 with a ryzen 7 1700. Thanks]]> Mon, 24 Jun 2024 10:16:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=44815&PID=127570&title=ab350-pro-4-impossible-to-turn-off-csm#127570