Problem with B550 Phantom Gaming-ITX/ax
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=17427
Printed Date: 13 Aug 2025 at 3:11pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Problem with B550 Phantom Gaming-ITX/ax
Posted By: phinn
Subject: Problem with B550 Phantom Gaming-ITX/ax
Date Posted: 07 Dec 2020 at 4:44am
I just did a new build with the ASRock "B550 Phantom Gaming-ITX/ax". At power on all I see is the "ASRock" logo in the center of my screen. I can't seem to get into BIOS.
I'm using the Ryzen 5800X both of which I picked up this week. Is it possible this motherboard did not come with a supported BIOS? I put the latest BIOS version 1.61 on a USB Flash drive (formatted FAT32 as it said). I can't get it to update.
Please help what do I do?
Thanks.
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Replies:
Posted By: Lumpybed
Date Posted: 08 Dec 2020 at 12:30pm
Yes, Zen 3 wasn't fully supported until BIOS 1.5. You can POST with a Zen 3 CPU with BIOS 1.2, but you'll need to update to 1.5 for full support.
I bought my board in October and it shipped with BIOS 1.0, even though 1.2 was released in August. Check for a sticker on the mobo side of the I/O shield, that should tell you what BIOS version was installed at the factory.
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Posted By: phinn
Date Posted: 08 Dec 2020 at 10:07pm
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Thank you for the response, I was able to hold F2 and load into BIOS so it must have been a setting somewhere that wasn't right. Once in there I updated to BIOS 1.61 and loaded optimized defaults, then added XMP profile, saved and rebooted. Everything perfect now on my 5800X guess I got lucky.
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