https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 18 Aug 2026 19:47:22 +0000 Wed, 23 Aug 2023 23:21:03 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=26360 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=26360&PID=107150&title=ryzen-9-5900-oem-not-working-on-taichi-b550#107150 Author: alexbo
Subject: 26360
Posted: 23 Aug 2023 at 11:21pm

Hi,
I bought a Ryzen 9 5900 (without the X, as its the OEM version), but when updating my current ryzen 5 3600, the new CPU gets only detected by BIOS on version 2.0 but will not continue to load windows.
I cant even get any windows or linux bootable usb to work either. It stays in constant "loading mode" nothing happens.
Yes, I have tried rufus with MBR and GPT as well as all possible combinations of CSM enabled, even secure boot disabled, cleared CMOS... Everything!

If I update to newer versions, it simply doesnt boot at all.
In the LCD display I get codes: 27 or 28. And nothing else happens.

Does somebody know if there is a specific BIOS I should use for this Ryzen 9 cpu?

I would really appreciate if someone could help me here.

Thanks a lot]]> Wed, 23 Aug 2023 23:21:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=26360&PID=107150&title=ryzen-9-5900-oem-not-working-on-taichi-b550#107150