AMD Motherboards - B550 Taichi won't let me in BIOS

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B550 Taichi won't let me in BIOS

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=18808
Printed Date: 08 Aug 2025 at 9:37pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B550 Taichi won't let me in BIOS

Posted By: D3adsongs
Subject: B550 Taichi won't let me in BIOS
Date Posted: 10 May 2021 at 9:24am

Just bought what looked a very lightly used B550 ASRock Taichi. I was able to update bios with a flash drive to make my Ryzen 5 5600x work with the mobo. So far the mobo works great and boots up fine but whenever I try to get into the bios via F2 or Delete I just get a black screen and the error code A9 on my motherboard. I have never seen the bios command not work before, what can I do to fix this??? Hitting the clear CMOS button did not fix this, please help thank you!

Replies:

Posted By: ket
Date Posted: 13 May 2021 at 5:02am

What UEFI version did you flash to? Do you have a dual monitor setup? Try turning the other monitor on and see if you get a display then as unlike when the VGA driver is loaded in Windows you'll only get a display output from the primary monitor during POST. You can also try reflashing the firmware from Windows if the other suggestions don't work.

Posted By: ThreeDee
Date Posted: 14 May 2021 at 8:48pm

you can also try popping the CMOS battery out and leave it out for a few minutes with the PC unplugged or PSU turned off and hold power button for a couple seconds to totally discharge any residual power stored in the motherboards capacitors

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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|