https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 18 Apr 2026 21:56:06 +0000 Tue, 09 Nov 2021 15:17:14 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=19796 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90894&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90894 Author: ASRock_TSD
Subject: 19796
Posted: 09 Nov 2021 at 3:17pm

Dear Leungwh,
Thank you for the posting.

The 'Launch Video OpROM Policy" is default as "Legacy Only" when the "CSM" is enabled.

For this case, could you please provide the whole system configuration(CPU, GPU, BIOS, DRAM) for us?

Thank you,

Best wishes,
ASRock TSD]]> Tue, 09 Nov 2021 15:17:14 +0000 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90894&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90894 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90883&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90883 Author: leungwh
Subject: 19796
Posted: 08 Nov 2021 at 12:04pm

Nope, I'm afraid this CSM option has been removed since BIOS version 3.xx

* Launch Video OpROM Policy

Maybe it still exist in ancient BIOS version 1.70 or before, but those versions are too old to be practical anymore. You cannot rollback to BIOS 1.xx once you have upgraded to 3.xx anyway.

There are only two options in BIOS 3.xx or 4.xx CSM menu
* Launch PXE OpROM Policy
* Launch Storage OpROM Policy

Trust me, I tried, without "Launch Video OpROM Policy" option in CSM set to legacy. non-UEFI graphics card won't boot up.]]> Mon, 08 Nov 2021 12:04:27 +0000 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90883&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90883 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90878&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90878 Author: kerberos_20
Subject: 19796
Posted: 08 Nov 2021 at 5:47am

when you enable CSM, then CSM fallback gets enabled for hardware which doesnt support UEFI, gpu is included
load optional oproms should be around there aswell]]> Mon, 08 Nov 2021 05:47:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90878&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90878 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90876&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90876 Author: leungwh
Subject: 19796
Posted: 07 Nov 2021 at 6:13pm

Not sure if ASRock technical support reading these threads.

Can we reintroduce CSM Video OpROM Policy into Fatal1ty B450 Gaming-ITX/ac BIOS? Seems it have been removed since BIOS version 3.xx

Graphic Cards are too expensive these days. Many folks (like me) need to resort to legacy non-UEFI graphic card as a stop gap solution. And those cards won't be able to boot up with out CSM Video OpROM Policy enabled.]]> Sun, 07 Nov 2021 18:13:17 +0000 https://forum.asrock.com/forum_posts.asp?TID=19796&PID=90876&title=fatal1ty-b450-gamingitx-ac-no-csm-video-oprom#90876