Fatal1ty B450 Gaming-ITX/ac - no CSM Video OpROM
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=19796
Printed Date: 08 Aug 2025 at 12:08am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Fatal1ty B450 Gaming-ITX/ac - no CSM Video OpROM
Posted By: leungwh
Subject: Fatal1ty B450 Gaming-ITX/ac - no CSM Video OpROM
Date Posted: 07 Nov 2021 at 6:13pm
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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. |
Replies:
Posted By: kerberos_20
Date Posted: 08 Nov 2021 at 5:47am
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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 ------------- http://valid.x86.fr/diq4l4" rel="nofollow">  http://www.userbenchmark.com/UserRun/47132492" rel="nofollow - userbenchmark |
Posted By: leungwh
Date Posted: 08 Nov 2021 at 12:04pm
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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. |
Posted By: ASRock_TSD
Date Posted: 09 Nov 2021 at 3:17pm
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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 |