AMD Motherboards - Addressable RGB led freeze on B450m PRO4

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Addressable RGB led freeze on B450m PRO4

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=10610
Printed Date: 26 Jul 2025 at 8:36am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Addressable RGB led freeze on B450m PRO4

Posted By: Dominik
Subject: Addressable RGB led freeze on B450m PRO4
Date Posted: 04 Jan 2019 at 10:36pm

Hi,

I am trying to make work the addressable RGB led port on the B450m PRO4 motherboard. I plug the Cougar RGB led strip (2 strips of 15 leds) and installed the Polychrome RGB software version 1.0.27. On first startup, the program updated the firmware of a chip (A Nuvoton microcontroller I think) and then I was able to change the effects of the led. All was working.

But, after a while, the last leds of the strip blink briefly and just freeze on a color. The other leds continue to work normally. When those leds freeze, the only way to unfreeze them is to turn off the power supply, because even if I shutdown the computer, those frozen leds stay light.

I tried to use the wICPFLASH.exe utility to rewrite the firmware version 2.07 (the file nu51_2.07), but the leds still freeze after a while. I even try to set it from the bios, but the same problem occurs. Sometimes it takes a few hours, sometimes it is after a few minutes.

Does anyone else have the same problem and found a solution?

Thanks

Replies:

Posted By: Dominik
Date Posted: 28 Jan 2019 at 2:43am

I finally found it was my led strips that were faulty. I exchanged them from where I bought them and I got no problems so far. Perhaps there was just one faulty led that cause the rest of the strip to freeze.