ASRock B550M-C / unable to access 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=52402
Printed Date: 17 Sep 2024 at 2:39am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: ASRock B550M-C / unable to access BIOS
Posted By: miagonz21
Subject: ASRock B550M-C / unable to access BIOS
Date Posted: 27 Jul 2024 at 2:39am
Good afternoon, I'm running into an issue after upgrading the BIOS version from p1.30 to p1.40 in order to upgrade the CPU from Ryzen 5 3600 to the Ryzen 5700X(100-000000926).
I upgraded the BIOS Version to 1.40 (with the Ryzen 5 3600 CPU), booted the PC and it loaded Windows, worked fine, but when I restart it and hit F2, F10, Del, to get in the BIOS menu it goes into a black screen and stays there.
I've tried:
Hard reset, power supply/Motherboard/Ram disconnected
Unplugged CMOS Batt
Settings>windows options>Recovery>Advanced startup>restart (goes to the same black screen)
Different display cables (HDMI), different monitors, tv
I'm going to try next resetting CMOS through the clear CMOS jumper setup, try one ram stick at a time in 1 slot. Other than that I'll have to do further troubleshooting research.
I still have the Ryzen 5 3600 CPU installed. The reason I'm trying to get back in the BIOS is to bump the BIOS version to p1.50 per ASRock BIOS recommendation for the Ryzen 5000 Series. Also, I would like to be able to get into the BIOS as it did before in case needed.
Any advice is appreciated.. Thanks
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Replies:
Posted By: eccential
Date Posted: 29 Jul 2024 at 6:09pm
Not saying this is your problem, but in case it helps, here's an experience I had quite some time ago on my X470 Gaming-ITX/ac board.
Some older BIOS had a bug, which broke BIOS video out when Above 4G Decoding was enabled. I had it OFF for the longest time, but when I was doing something with it, I enabled it to see what happens.
I could NOT see the BIOS again, but the system was working otherwise. Even CMOS clear did NOT help!
Since I had another system with the same board, I navigated through BIOS blind, by doing the exact same keystrokes against the non-messed-up X470 board. I was able to disable Above 4G Decoding this way and recovered BIOS display.
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